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General Relativity and Quantum Cosmology

arXiv:0711.4423 (gr-qc)
[Submitted on 28 Nov 2007]

Title:Hawking-Moss Tunneling in Noncommutative Eternal Inflation

Authors:Yi-Fu Cai, Yi Wang
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Abstract: The quantum behavior of noncommutative eternal inflation is quite different from the usual knowledge. Unlike the usual eternal inflation, the quantum fluctuation of noncommutative eternal inflation is suppressed by the Hubble parameter. Due to this, we need to reconsider many conceptions of eternal inflation. In this paper we study the Hawking-Moss tunneling in noncommutative eternal inflation using the stochastic approach. We obtain a brand-new form of the tunneling probability for this process and find that the Hawking-Moss tunneling is more unlikely to take place in the noncommutative case than in the usual one. We also conclude that the lifetime of a metastable de-Sitter (dS) vacuum in the noncommutative spacetime is longer than that in the commutative case.
Comments: 12 pages, 1 figure, accepted by JCAP
Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)
Cite as: arXiv:0711.4423 [gr-qc]
  (or arXiv:0711.4423v1 [gr-qc] for this version)
  https://doi.org/10.48550/arXiv.0711.4423
Journal reference: JCAP0801:001,2008
Related DOI: https://doi.org/10.1088/1475-7516/2008/01/001

Submission history

From: Yi-Fu Cai [view email]
[v1] Wed, 28 Nov 2007 05:44:11 UTC (22 KB)
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