- Elementary Particles, Quantum Field Theory 241
- Quantum Field Theories, String Theory 236
- Quantum Physics 231
- Classical and Quantum Gravitation, Relativity Theory 212
- Nuclear Energy 58
- Physics, general 43
- Particle and Nuclear Physics 38
- Astronomy, Astrophysics and Cosmology 37
- Condensed Matter Physics 35
- Nuclear Physics, Heavy Ions, Hadrons 32
- Optics, Lasers, Photonics, Optical Devices 32
- Particle Acceleration and Detection, Beam Physics 31
- Measurement Science and Instrumentation 28
- Characterization and Evaluation of Materials 23
- Optical and Electronic Materials 23
- Classical and Continuum Physics 20
- Theoretical, Mathematical and Computational Physics 18
- Atomic, Molecular, Optical and Plasma Physics 17
- Astronomy, Observations and Techniques 15
- Microwaves, RF and Optical Engineering 14