- Astronomy, Astrophysics and Cosmology 606
- Measurement Science and Instrumentation 559
- Elementary Particles, Quantum Field Theory 558
- Nuclear Energy 558
- Nuclear Physics, Heavy Ions, Hadrons 558
- Quantum Field Theories, String Theory 558
- Atomic, Molecular, Optical and Plasma Physics 30
- Condensed Matter Physics 30
- Particle and Nuclear Physics 30
- Physics, general 12
- Classical and Quantum Gravitation, Relativity Theory 4
- Differential Geometry 3
- Quantum Physics 3
- Theoretical, Mathematical and Computational Physics 3
- Optics, Lasers, Photonics, Optical Devices 2
- Atmospheric Sciences 1
- Atomic/Molecular Structure and Spectra 1
- Computer Applications 1
- Geography, general 1
- Nuclear Fusion 1