Classification
PBBC - Relativistic quantum mechanics
8
PKK - Theory of fields and particles - general
7
PKKA - Quantum field theory
7
PBA - Quantum theory
3
PKJ - Quantum electrodynamics
2
PKLB - Elementary particles - specific theories, interaction models
2
MSD - Mathematical methods in physics
1
PKA - Elementary particles, nuclei - general
1
PKKG - Gauge field theory
1
PKL - Elementary particles - interactions, reactions, resonances
1
PKN - Nuclear structure
1