Cyclic Universe and Infinite Past
Abstract
We address two questions about the past for infinitely cyclic cosmology. The first is whether it can contain an infinite length null geodesic into the past in view of the Borde-Guth-Vilenkin (BGV) "no-go" theorem, The second is whether, given that a small fraction of spawned universes fail to cycle, there is an adequate probability for a successful universe after an infinite time. We give positive answers to both questions and then show that in infinite cyclicity the total number of universes has been infinite for an arbitrarily long time.
- Publication:
-
Modern Physics Letters A
- Pub Date:
- 2007
- DOI:
- arXiv:
- arXiv:0705.2730
- Bibcode:
- 2007MPLA...22.2587F
- Keywords:
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- Astrophysics;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory
- E-Print:
- 7 pages. Clarification in discussion of infinite past