- Quantum Field Theories, String Theory 45
- Elementary Particles, Quantum Field Theory 44
- Classical and Quantum Gravitation, Relativity Theory 24
- Quantum Physics 24
- Nuclear Energy 23
- Astronomy, Astrophysics and Cosmology 22
- Nuclear Physics, Heavy Ions, Hadrons 22
- Measurement Science and Instrumentation 21
- Optics, Lasers, Photonics, Optical Devices 8
- Physics, general 4
- Condensed Matter Physics 3
- Quantum Optics 3
- Atomic, Molecular, Optical and Plasma Physics 2
- Characterization and Evaluation of Materials 2
- Circuits and Systems 2
- Computer Hardware 2
- Engineering, general 2
- Particle Acceleration and Detection, Beam Physics 2
- Particle and Nuclear Physics 2
- Physical Chemistry 2