- Elementary Particles, Quantum Field Theory 134
- Quantum Field Theories, String Theory 134
- Quantum Physics 108
- Classical and Quantum Gravitation, Relativity Theory 106
- Nuclear Energy 33
- Measurement Science and Instrumentation 31
- Astronomy, Astrophysics and Cosmology 29
- Nuclear Physics, Heavy Ions, Hadrons 28
- Optics, Lasers, Photonics, Optical Devices 11
- Particle and Nuclear Physics 7
- Microwaves, RF and Optical Engineering 5
- Particle Acceleration and Detection, Beam Physics 5
- Physical Chemistry 5
- Physics, general 4
- Atomic, Molecular, Optical and Plasma Physics 3
- Condensed Matter Physics 3
- Electronic Circuits and Devices 3
- Optical and Electronic Materials 3
- Astronomy, Observations and Techniques 2
- Classical and Continuum Physics 2