Order, Disorder and Entropy - Lecture 1

Order, Disorder and Entropy - Lecture 1

International Centre for Theoretical Sciences via YouTube Direct link

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ICTS Programs - Numbers

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Order, Disorder and Entropy - Lecture 1

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  1. 1 DATE :29 August 2018, 16:00 to
  2. 2 Lecture 1: Tuesday 28 August, 16:00 to
  3. 3 Lecture 2: Wednesday 29 August, 16:00 to
  4. 4 Lecture 3: Thursday 30 August, 16:00 to
  5. 5 The ICTS Campus - Imagined?
  6. 6 ICTS and its Mandate
  7. 7 ICTS Research
  8. 8 ICTS Programs
  9. 9 ICTS Programs - Directions
  10. 10 ICTS Programs - Numbers
  11. 11 ICTS Programs - A Sampling
  12. 12 ICTS Outreach - Initiatives
  13. 13 ICTS Outreach-Kaapi with Kuriosity
  14. 14 Thank You See you again at ICTS
  15. 15 Introduction to Speaker
  16. 16 [Order, disorder and entropy Lecture - 01 by Daan Frenkel]
  17. 17 Outline
  18. 18 Thermodynamics
  19. 19 Rudolf Clausius
  20. 20 Lvdwig Boltzmann
  21. 21 In 1901 Planck wrote:
  22. 22 S = k In W
  23. 23 Entropy is commonly understood as a measure of disorder.
  24. 24 Example
  25. 25 The "intuitive" version of the Second Law of Thermodynamics:
  26. 26 2. ENTROPY: The Computer Age
  27. 27 Hard-sphere liquid Cannot pay energy
  28. 28 The 2nd Law is not violated
  29. 29 1986: Hard-sphere colloids really freeze
  30. 30 Entropic Ordering Can Lead to Complex Structures
  31. 31 Coordination Number Dense Fluid
  32. 32 KIRKWOOD's GRAVE
  33. 33 Entropy driven formulation of liquid crystals of rod-like colloids
  34. 34 3. Entropy and Sand
  35. 35 Relation to Mechanically Stable Disordered Packings of Slightly Soft Repulsive Particles
  36. 36 Sketch of the d-N dimensional energy landscape of overcompressed, soft particles.
  37. 37 Can we count the number of distinct jammed states numerically
  38. 38 How do we count the number of distinct, disordered states?
  39. 39 To compute the "hyper-volume" of the basin of attraction of a given jammed state we must use a free-energy' calculation:
  40. 40 High dimensional basins are strange
  41. 41 The basins are not at all like hyper-spheres
  42. 42 Can we associate an extensive "entropy" with the number of distinct states?
  43. 43 But the volumes are not all the same. Hence basins are not equally populated:
  44. 44 Granular entropy versus N
  45. 45 The same numerical tools may have applications in materials discovery and in the study of deep neural nets
  46. 46 Dividing by N! seems arbitrary.. but it is not
  47. 47 What do the textbooks say?
  48. 48 Van Kampen
  49. 49 Enter Jaynes: "Usually, Gibbs' prose style conveys his meaning in a sufficiently clear way..."
  50. 50 GIBBS's Sentence
  51. 51 Two systems of 'identical' dilute colloidal solutions in equilibrium low-fat milk
  52. 52 Treat as gas of N labeled but otherwise identical particles
  53. 53 When the two systems are in equilibrium,
  54. 54 Back to the Edwards hypothesis:
  55. 55 It appears that, precisely at unjamming, all packings are equally likely!

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