- Elementary Particles, Quantum Field Theory 14
- Quantum Field Theories, String Theory 14
- Quantum Physics 14
- Classical and Quantum Gravitation, Relativity Theory 13
- Astronomy, Observations and Techniques 9
- Astrophysics and Astroparticles 7
- Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) 7
- Condensed Matter Physics 6
- Nuclear Physics, Heavy Ions, Hadrons 4
- Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences 4
- Aerospace Technology and Astronautics 3
- Astrobiology 3
- Atomic, Molecular, Optical and Plasma Physics 3
- Complex Systems 3
- Cosmology 3
- Planetology 3
- Surfaces and Interfaces, Thin Films 3
- Biological and Medical Physics, Biophysics 2
- Crystallography and Scattering Methods 2
- Nanotechnology 2