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arXiv:astro-ph/0512117 (astro-ph)
[Submitted on 5 Dec 2005 (v1), last revised 31 Oct 2006 (this version, v3)]

Title:Chaplygin gas may prevent big trip

Authors:José A. Jiménez Madrid (IAA, Granada & IMAFF, Madrid)
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Abstract: This paper deals with the study of the accretion of a generalized Chaplygin gas with equation of state $p=-A/\rho^\alpha$ onto wormholes. We have obtained that when dominant energy condition is violated the size of wormhole increases with the scale factor up to a given plateau. On the regime where the dominant energy condition is satisfied our model predicts a steady decreasing of the wormhole size as generalized Chaplygin gas is accreted. Our main conclusion is that the big trip mechanism is prevented in a large region of the physical parameters of the used model.
Comments: 6 pages, no figures, uses Revtex. Several typos corrected. References updated
Subjects: Astrophysics (astro-ph)
Report number: IMAFF-RCA-05-11
Cite as: arXiv:astro-ph/0512117
  (or arXiv:astro-ph/0512117v3 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0512117
Journal reference: Phys.Lett.B634:106-110,2006
Related DOI: https://doi.org/10.1016/j.physletb.2006.01.060

Submission history

From: José Antonio Jiménez Madrid [view email]
[v1] Mon, 5 Dec 2005 18:16:18 UTC (11 KB)
[v2] Fri, 27 Jan 2006 16:46:25 UTC (12 KB)
[v3] Tue, 31 Oct 2006 13:52:01 UTC (12 KB)
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