Corpus ID: 236428207

Three Impossible Theories

  title={Three Impossible Theories},
  author={Leonard Susskind},
I will begin by conjecturing a cosmological generalization of black hole complementarity (also known as the central dogma). I will then discuss three theories and argue that they are inconsistent with second law of thermodynamics if the cosmological version of the dogma is correct. The three theories are: the big rip; cyclic cosmology; and the Farhi-Guth-Guven mechanism for creating inflating universes behind black hole horizons. ar X iv :2 10 7. 11 68 8v 1 [ he pth ] 2 4 Ju l 2 02 1 

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