Quantum field theory Quantum theory 9 Particles (Nuclear physics) 6 Quantum electrodynamics 5 Condensed matter 4 Quantum chromodynamics 4 Mathematical physics 3 Mathematics 3 Quantum gravity 3 Conformal invariants 2 Congresses 2 Gauge fields (Physics) 2 Geometric quantization 2 Many-body problem 2 Nonequilibrium statistical mechanics 2 Physics 2 Quantum chemistry 2 String models 2 Topology 2 Angular momentum (Nuclear physics) 1 Bjorken, James D. 1 Black holes (Astronomy) 1 Bosons 1 Broken symmetry -Physics 1 Bulk solids 1 Condensed matter-Problems, exercises etc 1 Critical phenomena 1 DX centers (Solid state physics) 1 Differential topology 1 Dirac equation 1