Phantom Thermodynamics Revisited

A. Kwang-Hua Chu

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arXiv · astro-ph/0412704

Phantom Thermodynamics Revisited

A. Kwang-Hua Chu

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Abstract

Although generalized Chaplygin phantom models do not show any big rip singularities, we investigated k-essence models together with noncanonical kinetic energy for which there might be a big rip future singularity in the phantom region. We present our results by finely tuning the parameter ($β$) which is closely related to the canonical kinetic term in $k$-essence formalism. The scale factor $a(t)$ could be negative and decreasing within a specific range of $β$ during the initial evolutional period. There will be no singularity for the scale factor for all times once $β$ is carefully selected.

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A. Kwang-Hua Chu. 2005-04-18. Phantom Thermodynamics Revisited. https://arxiv.org/abs/astro-ph/0412704

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