Black hole versus cosmological horizon entropy

  title={Black hole versus cosmological horizon entropy},
  author={Tamara M. Davis and Paul C. W. Davies and C. Lineweaver},
  journal={Classical and Quantum Gravity},
The generalized second law of thermodynamics states that entropy always increases when all event horizons are attributed with an entropy proportional to their area. We test the generalized second law by investigating the change in entropy when dust, radiation and black holes cross a cosmological event horizon. We generalize for flat, open and closed Friedmann–Robertson–Walker universes by using numerical calculations to determine the cosmological horizon evolution. In most cases, the loss of… 

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The Universe is a physical system and the amount of information that the Universe can register and the number of elementary operations that it can have performed over its history are calculated.

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