- Quantum Field Theories, String Theory 1,903
- Elementary Particles, Quantum Field Theory 1,886
- Quantum Physics 1,341
- Classical and Quantum Gravitation, Relativity Theory 1,281
- Measurement Science and Instrumentation 662
- Nuclear Physics, Heavy Ions, Hadrons 658
- Nuclear Energy 646
- Astronomy, Astrophysics and Cosmology 644
- Optics, Lasers, Photonics, Optical Devices 173
- Microwaves, RF and Optical Engineering 163
- Physics, general 162
- Optical and Electronic Materials 143
- Condensed Matter Physics 93
- Atomic, Molecular, Optical and Plasma Physics 56
- Complex Systems 53
- Theoretical, Mathematical and Computational Physics 53
- Classical and Continuum Physics 47
- Particle and Nuclear Physics 47
- Surfaces and Interfaces, Thin Films 43
- Quantum Information Technology, Spintronics 41