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Lecture 31

Lecture 31. updates. Radiation and Vacuum Expansion. Vacuum: S  2 t. 10 -16. Scale Factor: S. Radiation: S   t. 0.0. 0.0. 1.0. 2.0. 3.0. Time: t. Time taken to double size. Exponential Doubling Time. Vacuum: S  2 t. 10 -16. Scale Factor: S. 0.0. 0.0. 1.0.

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Lecture 31

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  1. Lecture 31 updates

  2. Radiation and Vacuum Expansion Vacuum: S 2t 10-16 Scale Factor: S Radiation: S t 0.0 0.0 1.0 2.0 3.0 Time: t

  3. Time taken to double size Exponential Doubling Time Vacuum: S 2t 10-16 Scale Factor: S 0.0 0.0 1.0 2.0 3.0 Time: t

  4. Time to “fall” Newton’s gravitational constant Density of the system Vacuum density:  Matter density:  Density:  Collapse time Doubling time Orbit time “Falling” Time 1 (G  ) tfall ≈

  5. The Power Of Doubling Growth 1 8 231 16 32 48 64

  6. 100 Doublings 2100 ≈ 1030 rice grains fill the earth 100 doublings

  7. Scale Factor (S) 10-30 10-25 10-20 10-15 10-10 1080 1030 Density (tons/cm3) GUT transition 1020 1040 Temperature (K) Unknown physics Super-symmetry breaking Electroweak transition 1010 1 1 ps 10-40 10-30 10-20 1 10-10 Time (seconds)

  8. Scale Factor (S) 10-28 10-30 10-25 10-20 10-15 10-10 1080 1030 1073 tons/cm3 Density (tons/cm3) GUT transition 1020 1040 Temperature (K) Unknown physics Super-symmetry breaking Electroweak transition 1010 1 1 ps 10-40 10-30 10-20 1 10-10 Time (seconds)

  9. ?? GUT transition & inflation Inflation Reheating Scale Factor (S) 10-30 10-25 10-20 10-15 10-10 1080 1030 Density (tons/cm3) 1020 1040 Temperature (K) Unknown physics 1010 1 10-40 10-30 10-20 1 10-10 Time (seconds)

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