Topics in Quantum Chaos - An Infosys Prize Lecture by Nalini Anantharaman

Topics in Quantum Chaos - An Infosys Prize Lecture by Nalini Anantharaman

International Centre for Theoretical Sciences via YouTube Direct link

Eigenfunctions in the high frequency limit

19 of 38

19 of 38

Eigenfunctions in the high frequency limit

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Topics in Quantum Chaos - An Infosys Prize Lecture by Nalini Anantharaman

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  1. 1 Date: 03 January 2019, 16:00 to
  2. 2 Introduction
  3. 3 Topics in quantum chaos
  4. 4 1. Some history
  5. 5 1913 : Bohr's model of the hydrogen atom
  6. 6 1917 : A paper of Einstein
  7. 7 1925 : operators wave mechanics
  8. 8 Wigner 1950' Random Matrix model for heavy nuclei
  9. 9 Spectral statistics for hydrogen atom in strong magnetic field
  10. 10 Billiard tables
  11. 11 Spectral statistics for several billiard tables
  12. 12 A list of questions and conjectures
  13. 13 II. Quantum ergodicity
  14. 14 Disk
  15. 15 Sphere
  16. 16 Square / torus
  17. 17 Eigenfunctions in a mushroom-shaped billiard. Source A. Backer
  18. 18 Figure: Propagation of a gaussian wave packet in a cardioid. Source A. Backer.
  19. 19 Eigenfunctions in the high frequency limit
  20. 20 QE Theorem simplified: Shnirelman 74, Zelditch 85, Colin de Verdiere 85
  21. 21 Equivalently, there exists a subset S c N of density 1, such that
  22. 22 The full statement uses analysis on phase space, i.e.
  23. 23 Let 2kKEN be an orthonormal basis of L2M, with
  24. 24 Figure: Ergodic billiards. Source A. Backer
  25. 25 Quantum Unique Ergodicity conjecture: Rudnick, Sarnak 94
  26. 26 Theorem: Let M have negative curvature and dimension d. Assume
  27. 27 lll. Toy models
  28. 28 Regular graphs
  29. 29 Why do they seem relevant
  30. 30 A major difference
  31. 31 Some advantages
  32. 32 A geometric assumption
  33. 33 Numerical simulations on Random Regular Graphs RRG
  34. 34 Recent results : deterministic
  35. 35 Examples
  36. 36 Recent results : random
  37. 37 Open questions and suggestions
  38. 38 Q&A

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