Physics & Astronomy

1. gases 100%
2. fermions 55%
3. superfluidity 45%
4. interactions 41%
5. excitation 31%
6. momentum 28%
7. crossovers 28%
8. spectroscopy 23%
9. harmonics 21%
10. Bose-Einstein condensates 20%
11. impurities 20%
12. bosons 19%
13. energy conservation 16%
14. acoustics 16%
15. atoms 16%
16. single electron transistors 16%
17. radio frequencies 15%
18. traps 15%
19. oscillations 15%
20. signatures 15%
21. approximation 14%
22. phonons 14%
23. trimers 14%
24. broken symmetry 14%
25. Fermi liquids 13%
26. transition temperature 13%
27. acoustic velocity 12%
28. polarons 12%
29. shift 11%
30. vibration mode 11%
31. baths 11%
32. strings 10%
33. critical temperature 10%
34. perturbation theory 10%
35. monatomic gases 9%
36. transistors 9%
37. symmetry 9%
38. BCS theory 8%
39. theorems 8%
40. cooling 8%
41. perturbation 8%
42. conservation 8%
43. polarization 7%
44. products 7%
45. boxes 7%
46. damping 7%
47. energy 7%
48. superconductivity 7%
49. temperature 6%
50. trucks 6%