\begin{longtable}[H]{p{0.25\textwidth}|p{0.6\textwidth}|p{0.15\textwidth}}
\caption{PACS categories most correlated to the topics derived with the unsupervised model. Correlation is measured as the mutual pointwise information (pmi).}
\label{table:full_topics_pacs_pmi}\\
\toprule
                                        &                    &   pmi \\
topic & PACS category &       \\
\midrule
\endfirsthead
\caption[]{PACS categories most correlated to the topics derived with the unsupervised model. Correlation is measured as the mutual pointwise information (pmi).} \\
\toprule
                                        &                    &   pmi \\
topic & PACS category &       \\
\midrule
\endhead
\midrule
\multicolumn{3}{r}{{Continued on next page}} \\
\midrule
\endfoot

\bottomrule
\endlastfoot
\multirow{5}{*}{\begin{tabular}{l}Algorithms and\\ calculation\\ techniques\end{tabular}} & Lattice theory and statistics &  1.39 \\
                                        & Lattice gauge theory &  1.17 \\
                                        & Lattice QCD calculations &  1.12 \\
                                        & Particle correlations and fluctuations &  0.99 \\
                                        & Inelastic scattering: many-particle final states &  0.80 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Amplitude of\\ processes in\\ colliders\end{tabular}} & Baryon resonances (S=C=B=0) &  1.13 \\
                                        & Pion-baryon interactions &  1.10 \\
                                        & Meson-meson interactions &  1.03 \\
                                        & Nucleon-nucleon interactions &  0.93 \\
                                        & Dispersion relations &  0.92 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Amplitudes and\\ Feynman Diagram\end{tabular}} & Analytic properties of S matrix &  1.66 \\
                                        & Properties of perturbation theory &  1.57 \\
                                        & General properties of perturbation theory &  1.39 \\
                                        & Dispersion relations &  1.04 \\
                                        & Lattice theory and statistics &  0.86 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Analyses and\\ measurements\\ from colliders\end{tabular}} & Neutrino-induced reactions &  0.96 \\
                                        & Muons &  0.89 \\
                                        & Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors &  0.81 \\
                                        & Pion-baryon interactions &  0.79 \\
                                        & Meson production &  0.77 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Annihilation\\ and scattering\\ cross-sections\end{tabular}} & Total cross sections &  1.60 \\
                                        & Hadron production in e−e+ interactions &  1.23 \\
                                        & Meson production &  1.11 \\
                                        & Elastic and Compton scattering &  1.07 \\
                                        & Electromagnetic processes and properties &  1.03 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Astrophysics\end{tabular}} & Collective flow &  1.91 \\
                                        & Hydrodynamic models &  1.74 \\
                                        & Particle correlations and fluctuations &  1.52 \\
                                        & Relativistic heavy-ion collisions &  1.38 \\
                                        & Particle and resonance production &  1.35 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Black holes\end{tabular}} & Black holes &  2.64 \\
                                        & Quantum aspects of black holes, evaporation, thermodynamics &  2.59 \\
                                        & Physics of black holes &  2.57 \\
                                        & Classical black holes &  2.55 \\
                                        & Higher-dimensional black holes, black strings, and related objects &  2.38 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Boundary\\ conditions/non-\\ locality\end{tabular}} & Entanglement and quantum nonlocality &  1.18 \\
                                        & Theory of quantized fields &  0.90 \\
                                        & Foundations of quantum mechanics; measurement theory &  0.80 \\
                                        & Conformal field theory, algebraic structures &  0.71 \\
                                        & Integrable systems &  0.70 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}CP violating\\ processes\end{tabular}} & Decays of bottom mesons &  1.53 \\
                                        & Determination of Cabibbo-Kobayashi \& Maskawa (CKM) matrix elements &  1.48 \\
                                        & Bottom mesons (|B|>0) &  1.34 \\
                                        & Charge conjugation, parity, time reversal, and other discrete symmetries &  1.30 \\
                                        & Decays of bottom mesons &  1.19 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Conformal Field\\ Theory\end{tabular}} & Conformal field theory, algebraic structures &  1.72 \\
                                        & Algebraic methods &  1.34 \\
                                        & Nonperturbative techniques; string field theory &  1.19 \\
                                        & Lattice theory and statistics &  1.15 \\
                                        & M theory &  0.99 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Cosmological\\ sources\end{tabular}} & Background radiations &  1.86 \\
                                        & Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc) &  1.55 \\
                                        & Neutrino, muon, pion, and other elementary particles; cosmic rays &  1.49 \\
                                        & Dark energy &  1.29 \\
                                        & Cosmology &  1.21 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Cosmology and\\ gravity\end{tabular}} & Lorentz and Poincaré invariance &  1.34 \\
                                        & Loop quantum gravity, quantum geometry, spin foams &  1.32 \\
                                        & Axions and other Nambu-Goldstone bosons (Majorons, familons, etc.) &  1.30 \\
                                        & Dark energy &  1.28 \\
                                        & Quantum cosmology &  1.26 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Cross-sections\\ in colliders\end{tabular}} & Total cross sections &  1.57 \\
                                        & Inclusive production with identified hadrons &  1.43 \\
                                        & Particle and resonance production &  1.42 \\
                                        & Production &  1.40 \\
                                        & Inclusive production with identified leptons, photons, or other nonhadronic particles &  1.36 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Dark matter\\ (particles and\\ direct\\ searches)\end{tabular}} & Dark matter &  2.36 \\
                                        & Elementary particle processes &  1.94 \\
                                        & Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors &  1.40 \\
                                        & Neutrino, muon, pion, and other elementary particles; cosmic rays &  1.18 \\
                                        & Supersymmetric partners of known particles &  1.15 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Dark matter in\\ the universe\end{tabular}} & Dark matter &  1.86 \\
                                        & Dark energy &  1.69 \\
                                        & Elementary particle processes &  1.44 \\
                                        & Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc) &  1.36 \\
                                        & Cosmology &  1.27 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Decay\\ measurements\end{tabular}} & Decays of charmed mesons &  1.93 \\
                                        & Decays of bottom mesons &  1.91 \\
                                        & Determination of Cabibbo-Kobayashi \& Maskawa (CKM) matrix elements &  1.83 \\
                                        & Decays of J/ψ, Υ, and other quarkonia &  1.82 \\
                                        & Bottom mesons (|B|>0) &  1.82 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Detectors\end{tabular}} & Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors &  1.48 \\
                                        & Muons &  0.99 \\
                                        & Ordinary neutrinos &  0.98 \\
                                        & Neutrino interactions &  0.91 \\
                                        & Solar neutrinos &  0.87 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Double-beta\\ decay\end{tabular}} & Baryons &  1.20 \\
                                        & Charmed baryons (|C|>0, B=0) &  1.08 \\
                                        & Glueball and nonstandard multi-quark/gluon states &  1.03 \\
                                        & Bottom baryons (|B|>0) &  0.99 \\
                                        & Hadron mass models and calculations &  0.97 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Early-universe\\ and other\\ cosmological\\ data\end{tabular}} & Background radiations &  1.57 \\
                                        & Dark matter &  1.38 \\
                                        & Axions and other Nambu-Goldstone bosons (Majorons, familons, etc.) &  1.28 \\
                                        & Neutrino, muon, pion, and other elementary particles; cosmic rays &  1.27 \\
                                        & Elementary particle processes &  1.11 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Effective Field\\ Theory\end{tabular}} & Noncommutative field theory &  1.89 \\
                                        & Noncommutative geometry &  1.77 \\
                                        & Quantum mechanics &  0.85 \\
                                        & Nonlinear or nonlocal theories and models &  0.82 \\
                                        & Canonical quantization &  0.81 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Electromagnetis\\ m\end{tabular}} & Hydrodynamic models &  1.45 \\
                                        & Collective flow &  1.31 \\
                                        & Electric and magnetic moments &  1.16 \\
                                        & Relativistic heavy-ion collisions &  1.11 \\
                                        & Relativistic wave equations &  1.11 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Events in\\ colliders\\ (kinematics?)\end{tabular}} & Limits on production of particles &  1.71 \\
                                        & Production &  1.60 \\
                                        & Inclusive production with identified leptons, photons, or other nonhadronic particles &  1.57 \\
                                        & W bosons &  1.53 \\
                                        & Jets in large-Q2 scattering &  1.53 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Events in\\ colliders\\ (signatures?)\end{tabular}} & Limits on production of particles &  1.69 \\
                                        & Jets in large-Q2 scattering &  1.56 \\
                                        & Production &  1.45 \\
                                        & Inclusive production with identified leptons, photons, or other nonhadronic particles &  1.37 \\
                                        & W bosons &  1.35 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Experimental\\ investigation\\ of the leptonic\\ sector\end{tabular}} & Limits on production of particles &  1.38 \\
                                        & Electromagnetic decays &  1.30 \\
                                        & Decays of J/ψ, Υ, and other quarkonia &  1.26 \\
                                        & Decays of J/ψ, Υ, and other quarkonia &  1.19 \\
                                        & Muons &  1.18 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Experimental\\ jargon\end{tabular}} & Electromagnetic corrections to strong- and weak-interaction processes &  0.35 \\
                                        & Solar neutrinos &  0.30 \\
                                        & Electroweak radiative corrections &  0.30 \\
                                        & Nucleon-nucleon interactions &  0.29 \\
                                        & Neutrino-induced reactions &  0.25 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Experiments on\\ light\end{tabular}} & Specific calculations &  1.31 \\
                                        & Elastic and Compton scattering &  1.26 \\
                                        & Electromagnetic processes and properties &  1.09 \\
                                        & Axions and other Nambu-Goldstone bosons (Majorons, familons, etc.) &  1.09 \\
                                        & Quantum electrodynamics &  1.08 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Field theory\\ and gravity\end{tabular}} & Classical general relativity &  1.10 \\
                                        & Modified theories of gravity &  1.08 \\
                                        & Lower dimensional models; minisuperspace models &  1.06 \\
                                        & Fundamental problems and general formalism &  1.05 \\
                                        & Classical black holes &  1.02 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Flavor mixing\end{tabular}} & Quark and lepton masses and mixing &  1.36 \\
                                        & Flavor symmetries &  1.30 \\
                                        & Charge conjugation, parity, time reversal, and other discrete symmetries &  1.28 \\
                                        & Determination of Cabibbo-Kobayashi \& Maskawa (CKM) matrix elements &  1.10 \\
                                        & Neutrino mass and mixing &  1.06 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Flavour physics\end{tabular}} & Global symmetries (e.g., baryon number, lepton number) &  1.04 \\
                                        & Flavor symmetries &  1.03 \\
                                        & Non-standard-model neutrinos, right-handed neutrinos, etc. &  1.02 \\
                                        & Unification of couplings; mass relations &  1.00 \\
                                        & Quark and lepton masses and mixing &  0.99 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Form factors\end{tabular}} & Electromagnetic form factors &  1.97 \\
                                        & Relativistic quark model &  1.34 \\
                                        & Protons and neutrons &  1.33 \\
                                        & Hyperons &  1.18 \\
                                        & Sum rules &  1.18 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Gauge Theory\end{tabular}} & Gauge field theories &  1.20 \\
                                        & Lorentz and Poincaré invariance &  1.16 \\
                                        & Canonical formalism, Lagrangians, and variational principles &  1.10 \\
                                        & Lagrangian and Hamiltonian approach &  1.09 \\
                                        & Noncommutative field theory &  1.08 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Gauge symmetry\\ breaking/GUTs\end{tabular}} & Unified theories and models of strong and electroweak interactions &  1.34 \\
                                        & Unification of couplings; mass relations &  1.26 \\
                                        & Spontaneous breaking of gauge symmetries &  1.15 \\
                                        & Unified field theories and models &  1.14 \\
                                        & Spontaneous and radiative symmetry breaking &  0.96 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Gravitons and\\ extra-\\ dimensions\end{tabular}} & Higher-dimensional gravity and other theories of gravity &  1.41 \\
                                        & Gravity in more than four dimensions, Kaluza-Klein theory, unified field theories; alternative theories of gravity &  1.39 \\
                                        & Modified theories of gravity &  1.34 \\
                                        & Lower dimensional models; minisuperspace models &  1.08 \\
                                        & String and brane phenomenology &  1.04 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Hadronic zoo\end{tabular}} & Decays of J/ψ, Υ, and other quarkonia &  1.92 \\
                                        & Heavy quarkonia &  1.73 \\
                                        & Exotic mesons &  1.71 \\
                                        & Decays of J/ψ, Υ, and other quarkonia &  1.65 \\
                                        & Mesons with S=C=B=0, mass > 2.5 GeV (including quarkonia) &  1.58 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Heavy quarks\\ and ions\end{tabular}} & Particle and resonance production &  1.40 \\
                                        & Particle correlations and fluctuations &  1.39 \\
                                        & Collective flow &  1.38 \\
                                        & Relativistic heavy-ion collisions &  1.37 \\
                                        & Fragmentation into hadrons &  1.29 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Higgs boson\end{tabular}} & Other neutral Higgs bosons &  1.91 \\
                                        & Supersymmetric Higgs bosons &  1.87 \\
                                        & Non-standard-model Higgs bosons &  1.77 \\
                                        & Extensions of electroweak Higgs sector &  1.73 \\
                                        & Standard-model Higgs bosons &  1.69 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Higgs sector\\ beyond the SM\end{tabular}} & Other neutral Higgs bosons &  1.65 \\
                                        & Supersymmetric Higgs bosons &  1.64 \\
                                        & Non-standard-model Higgs bosons &  1.60 \\
                                        & Extensions of electroweak Higgs sector &  1.55 \\
                                        & Standard-model Higgs bosons &  1.37 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}High-energy\\ source fluxes\end{tabular}} & Neutrino, muon, pion, and other elementary particles; cosmic rays &  1.39 \\
                                        & Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors &  1.33 \\
                                        & Solar neutrinos &  1.28 \\
                                        & Background radiations &  0.89 \\
                                        & Ordinary neutrinos &  0.74 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Holographic\\ Principle and\\ dualities\end{tabular}} & Entanglement and quantum nonlocality &  1.89 \\
                                        & Gauge/string duality &  1.53 \\
                                        & Conformal field theory, algebraic structures &  1.43 \\
                                        & Higher-dimensional black holes, black strings, and related objects &  1.06 \\
                                        & Quantum aspects of black holes, evaporation, thermodynamics &  1.02 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Inflation\end{tabular}} & Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.) &  1.80 \\
                                        & Origin and formation of the Universe &  1.78 \\
                                        & Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc) &  1.76 \\
                                        & Background radiations &  1.70 \\
                                        & Quantum cosmology &  1.67 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Lattice\\ calculation\\ techniques\end{tabular}} & Lattice QCD calculations &  1.38 \\
                                        & Lattice gauge theory &  1.36 \\
                                        & Lattice theory and statistics &  0.80 \\
                                        & General properties of perturbation theory &  0.76 \\
                                        & Renormalization &  0.74 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Lepton/Meson\\ decay\end{tabular}} & Determination of Cabibbo-Kobayashi \& Maskawa (CKM) matrix elements &  1.97 \\
                                        & Decays of charmed mesons &  1.94 \\
                                        & Decays of bottom mesons &  1.89 \\
                                        & Decays of charmed mesons &  1.86 \\
                                        & Bottom mesons (|B|>0) &  1.81 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Lie algebra\end{tabular}} & Algebraic methods &  1.39 \\
                                        & Integrable systems &  1.28 \\
                                        & Geometry, differential geometry, and topology &  1.19 \\
                                        & Noncommutative geometry &  1.03 \\
                                        & Quantum mechanics &  0.94 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Loops and\\ higher order\\ expansions in\\ Feynman\\ Diagrams\end{tabular}} & Electromagnetic corrections to strong- and weak-interaction processes &  1.32 \\
                                        & Electroweak radiative corrections &  1.23 \\
                                        & Specific calculations &  1.08 \\
                                        & Summation of perturbation theory &  1.00 \\
                                        & General properties of perturbation theory &  0.98 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}M-theory and\\ theories of\\ everything\end{tabular}} & M theory &  1.63 \\
                                        & Supergravity &  1.34 \\
                                        & Nonperturbative techniques; string field theory &  1.27 \\
                                        & Compactification and four-dimensional models &  1.22 \\
                                        & D branes &  1.13 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Matter in Yang-\\ Mills theories\end{tabular}} & Technicolor models &  1.23 \\
                                        & Unified theories and models of strong and electroweak interactions &  1.06 \\
                                        & Unification of couplings; mass relations &  0.99 \\
                                        & Composite models &  0.94 \\
                                        & Spontaneous breaking of gauge symmetries &  0.88 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Measurements\\ and analysis of\\ colliders data\end{tabular}} & Determination of Cabibbo-Kobayashi \& Maskawa (CKM) matrix elements &  0.90 \\
                                        & Solar neutrinos &  0.87 \\
                                        & Muons &  0.84 \\
                                        & Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors &  0.75 \\
                                        & Decays of charmed mesons &  0.73 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Meson\\ phenomenology\end{tabular}} & Other mesons with S=C=0, mass < 2.5 GeV &  1.53 \\
                                        & Hadron mass models and calculations &  1.48 \\
                                        & Meson-meson interactions &  1.45 \\
                                        & Mesons &  1.41 \\
                                        & Glueball and nonstandard multi-quark/gluon states &  1.37 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Neutrino\\ physics\end{tabular}} & Ordinary neutrinos &  2.04 \\
                                        & Solar neutrinos &  1.98 \\
                                        & Non-standard-model neutrinos, right-handed neutrinos, etc. &  1.97 \\
                                        & Neutrino mass and mixing &  1.94 \\
                                        & Neutrino, muon, pion, and other elementary particles; cosmic rays &  1.92 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Non-abelian\\ theories\end{tabular}} & Gauge field theories &  1.04 \\
                                        & Magnetic monopoles &  1.03 \\
                                        & Canonical formalism, Lagrangians, and variational principles &  0.97 \\
                                        & Lagrangian and Hamiltonian approach &  0.88 \\
                                        & Noncommutative field theory &  0.87 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Partons\\ distributions\end{tabular}} & Summation of perturbation theory &  1.62 \\
                                        & Factorization &  1.49 \\
                                        & Production &  1.46 \\
                                        & Jets in large-Q2 scattering &  1.44 \\
                                        & Perturbative calculations &  1.43 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Perturbative\\ QCD\end{tabular}} & Factorization &  1.17 \\
                                        & Summation of perturbation theory &  1.10 \\
                                        & Perturbative calculations &  1.03 \\
                                        & Production &  0.66 \\
                                        & Heavy quark effective theory &  0.65 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Phenomenologica\\ l jargon\end{tabular}} & Foundations of quantum mechanics; measurement theory &  0.34 \\
                                        & Axions and other Nambu-Goldstone bosons (Majorons, familons, etc.) &  0.31 \\
                                        & Loop quantum gravity, quantum geometry, spin foams &  0.30 \\
                                        & Experimental tests of gravitational theories &  0.29 \\
                                        & Potential models &  0.27 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}QCD calculation\\ techniques\end{tabular}} & Gluons &  1.29 \\
                                        & General properties of perturbation theory &  1.02 \\
                                        & Renormalization &  0.96 \\
                                        & General properties of QCD (dynamics, confinement, etc.) &  0.94 \\
                                        & Lattice gauge theory &  0.89 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Quantum\\ Chromodynamics\\ (QCD)\end{tabular}} & Sum rules &  2.24 \\
                                        & Other nonperturbative calculations &  1.42 \\
                                        & Bottom baryons (|B|>0) &  1.32 \\
                                        & Charmed baryons (|C|>0, B=0) &  1.26 \\
                                        & Heavy quark effective theory &  1.16 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Quantum Field\\ Theory\end{tabular}} & Foundations of quantum mechanics; measurement theory &  1.32 \\
                                        & Quantum mechanics &  1.15 \\
                                        & Algebraic methods &  1.06 \\
                                        & Canonical quantization &  0.97 \\
                                        & Theory of quantized fields &  0.95 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Quantum Systems\\ and Equations\\ of motion\end{tabular}} & Canonical formalism, Lagrangians, and variational principles &  1.23 \\
                                        & Magnetic monopoles &  1.15 \\
                                        & Lagrangian and Hamiltonian approach &  1.11 \\
                                        & Relativistic wave equations &  1.04 \\
                                        & Canonical quantization &  1.00 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Quantum systems\\ and\\ thermodynamics\end{tabular}} & Hydrodynamic models &  1.21 \\
                                        & Theory of quantized fields &  0.96 \\
                                        & Foundations of quantum mechanics; measurement theory &  0.93 \\
                                        & Entanglement and quantum nonlocality &  0.90 \\
                                        & Quark-gluon plasma &  0.75 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Renormalization\end{tabular}} & Renormalization group evolution of parameters &  1.77 \\
                                        & Renormalization &  1.46 \\
                                        & General properties of perturbation theory &  0.85 \\
                                        & Technicolor models &  0.85 \\
                                        & Other nonperturbative techniques &  0.81 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Scattering of\\ composite\\ particles\end{tabular}} & Total and inclusive cross sections (including deep-inelastic processes) &  1.78 \\
                                        & Photon and charged-lepton interactions with hadrons &  1.65 \\
                                        & Elastic and Compton scattering &  1.49 \\
                                        & Regge theory, duality, absorptive/optical models &  1.35 \\
                                        & Polarization in interactions and scattering &  1.32 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Search for BSM\\ physics\end{tabular}} & Muons &  1.12 \\
                                        & Decays of K mesons &  1.09 \\
                                        & Decays of taus &  1.09 \\
                                        & Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors &  1.07 \\
                                        & Neutral currents &  1.05 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Sigma models\\ (?)\end{tabular}} & Integrable systems &  1.74 \\
                                        & Algebraic methods &  1.23 \\
                                        & Supersymmetry &  1.09 \\
                                        & Lattice theory and statistics &  1.00 \\
                                        & Conformal field theory, algebraic structures &  0.99 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Solar neutrinos\end{tabular}} & Solar neutrinos &  2.64 \\
                                        & Ordinary neutrinos &  2.30 \\
                                        & Neutrino mass and mixing &  2.13 \\
                                        & Non-standard-model neutrinos, right-handed neutrinos, etc. &  1.98 \\
                                        & Neutrino, muon, pion, and other elementary particles; cosmic rays &  1.89 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Space-time\\ geometry and\\ gravity\end{tabular}} & Exact solutions &  1.75 \\
                                        & Classical general relativity &  1.57 \\
                                        & Einstein-Maxwell spacetimes, spacetimes with fluids, radiation or classical fields &  1.53 \\
                                        & Classical black holes &  1.51 \\
                                        & Higher-dimensional black holes, black strings, and related objects &  1.51 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Spin/angular mo\\ mentum/polariza\\ tion\end{tabular}} & Polarization in interactions and scattering &  1.80 \\
                                        & Photon and charged-lepton interactions with hadrons &  1.47 \\
                                        & Fragmentation into hadrons &  1.41 \\
                                        & Inclusive production with identified hadrons &  1.35 \\
                                        & Meson production &  1.21 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}States of\\ matter\end{tabular}} & Quark deconfinement, quark-gluon plasma production, and phase transitions &  1.09 \\
                                        & Finite-temperature field theory &  1.08 \\
                                        & Gauge/string duality &  1.02 \\
                                        & Lattice theory and statistics &  0.90 \\
                                        & Quark matter &  0.84 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}String theory\end{tabular}} & D branes &  1.86 \\
                                        & Magnetic monopoles &  1.71 \\
                                        & Nonperturbative techniques; string field theory &  1.67 \\
                                        & Extended classical solutions; cosmic strings, domain walls, texture &  1.52 \\
                                        & Strings and branes &  1.46 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Supergravity\end{tabular}} & M theory &  1.62 \\
                                        & Supergravity &  1.58 \\
                                        & Compactification and four-dimensional models &  1.51 \\
                                        & Nonperturbative techniques; string field theory &  1.37 \\
                                        & Geometry, differential geometry, and topology &  1.30 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Supersymmetric\\ particles\end{tabular}} & Supersymmetric partners of known particles &  1.68 \\
                                        & Supersymmetric models &  1.35 \\
                                        & Supersymmetric Higgs bosons &  1.27 \\
                                        & Unification of couplings; mass relations &  0.85 \\
                                        & Non-standard-model Higgs bosons &  0.82 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Supersymmetric\\ theories\end{tabular}} & Supersymmetry &  1.37 \\
                                        & M theory &  1.35 \\
                                        & Supergravity &  1.20 \\
                                        & Nonperturbative techniques; string field theory &  1.05 \\
                                        & Gauge field theories &  1.05 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Symétrie\\ chirale\end{tabular}} & Chiral Lagrangians &  1.55 \\
                                        & Chiral symmetries &  1.54 \\
                                        & Lattice QCD calculations &  1.48 \\
                                        & Light quarks &  1.30 \\
                                        & Lattice gauge theory &  1.21 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Theoretical\\ jargon\end{tabular}} & Integrable systems &  0.36 \\
                                        & Quantum mechanics &  0.36 \\
                                        & Foundations of quantum mechanics; measurement theory &  0.33 \\
                                        & Algebraic methods &  0.31 \\
                                        & Fundamental problems and general formalism &  0.28 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Thermodynamics\end{tabular}} & Quark deconfinement, quark-gluon plasma production, and phase transitions &  1.62 \\
                                        & Quark matter &  1.61 \\
                                        & Finite-temperature field theory &  1.57 \\
                                        & Quark-gluon plasma &  1.35 \\
                                        & Other models for strong interactions &  1.11 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Top quark\end{tabular}} & Top quarks &  1.96 \\
                                        & Neutral currents &  1.20 \\
                                        & Limits on production of particles &  1.07 \\
                                        & Other neutral Higgs bosons &  0.98 \\
                                        & Other gauge bosons &  0.97 \\
\cline{1-3}
\multirow{5}{*}{\begin{tabular}{l}Topology\end{tabular}} & Compactification and four-dimensional models &  1.40 \\
                                        & Geometry, differential geometry, and topology &  1.31 \\
                                        & Nonperturbative techniques; string field theory &  1.20 \\
                                        & M theory &  1.11 \\
                                        & Strings and branes &  1.04 \\
\end{longtable}
