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Chaplygin gas may prevent big trip

José A. Jiménez Madrid
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Abstract

This paper deals with the study of the accretion of a generalized Chaplygin gas with equation of state $p=-A/ρ^α$ 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.

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José A. Jiménez Madrid. 2006-10-31. Chaplygin gas may prevent big trip. https://doi.org/10.1016/j.physletb.2006.01.060

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