The following sections have been revised in categories 10 The Physics of Elementary Particles and Fields, and 20 Nuclear Physics:

N - new (red);  M - modified (blue)--- [2001 text for modified codes in green]; D - deleted (purple).

11.10.-z Field theory (for gauge field theories, see 11.15)

11.10.Cd Axiomatic approach

11.10.Ef   Lagrangian and Hamiltonian approach

11.10.Gh Renormalization

11.10.Hi Renormalization group evolution of parameters

11.10.Jj Asymptotic problems and properties

11.10.Kk Field theories in dimensions other than four (see also 04.50 Gravity in more than four dimensions; 04.60.K Lower dimensional models in quantum gravity)

11.10.Lm Nonlinear or nonlocal theories and models (see also 11.27 Extended classical solutions; cosmic strings, domain walls, texture)

N 11.10.Nx   Noncommutative field theory

11.10.St Bound and unstable states; Bethe-Salpeter equations

11.10.Wx Finite-temperature field theory

... ... ... Relativistic wave equations, see 03.65.P
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M 11.25.-w   Strings and branes (for cosmic strings, see 98.80.Cq is cosmology) --- [Original text:  Theory of fundamental strings]

11.25.Db      Properties of perturbation theory

11.25.Hf       Conformal field theory, algebraic structures

11.25.Mj      Compactification and four-dimensional models

11.25.Pm      Noncritical string theory

11.25.Sq       Nonperturbative techniques; string field theory

N 11.25.Tq    Gauge/string duality

N 11.25.Uv    D branes

N 11.25.Wx   String and brane phenomenology

N 11.25.Yb   M theory
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12.39.-x Phenomenological quark models

12.39.Ba Bag model

12.39.Dc Skyrmions

12.39.Fe Chiral Lagrangians

12.39.Hg Heavy quark effective theory

12.39.Jh Nonrelativistic quark model

12.39.Ki Relativistic quark model

12.39.Mk Glueball and nonstandard multi-quark/gluon states

12.39.Pn Potential models

N 12.39.St  Factorization
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D 13.10.+q Weak and electromagnetic interactions of leptons (see also 13.35 Decays of leptons)
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M 13.20.-v Leptonic, semileptonic, and radiative decays of mesons --- [Original text: Leptonic and semileptonic decays of mesons]
 

13.20.Cz     Decays of pi mesons

13.20.Eb     Decays of K mesons

13.20.Fc     Decays of charmed mesons

13.20.Gd    Decays of J/psi, Upsilon, and other quarkonia

13.20.He     Decays of bottom mesons

13.20.Jf       Decays of other mesons
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13.30.-a      Decays of baryons

M 13.30.Ce  Leptonic, semileptonic, and radiative decays --- [Original text:  Leptonic and semileptonic decays]

13.30.Eg       Hadronic decays
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D 13.65.+i Hadron production by electron-positron collisions
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N 13.66.-a Lepton-lepton interactions

N 13.66.Bc   e⁺e^- hadron production

N 13.66.De   e⁺e^-lepton production

N 13.66.Fg    e⁺e^- gauge and Higgs boson production

N 13.66.Hk   e⁺e^- production of non-standard model particles

N 13.66.Jn     e⁺e^- precision measurements

N 13.66.Lm   Processes in other lepton-lepton interactions
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25.75.-q Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy ion collisions, should be classified under both 25.75 and the 13 or 25 category appropriate to the light ions)

25.75.Dw Particle and resonance production

25.75.Gz Particle correlations

25.75.Ld Collective flow

N 25.75.Nq   Quark deconfinement, quark-gluon plasma production, and phase transitions (see also 12.38.Mh Quark-gluon plasma)
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