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arXiv · 0810.4385

On phantom thermodynamics with negative temperature

Yun Soo Myung
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Abstract

We discuss the thermodynamic properties of the Friedmann-Robertson-Walker universe with dark energy fluids labelled by $ω=p/ρ<-1/3$. Using the integrability condition, we show that the phantom phase of $w<-1$ can still be thermodynamically allowed even when the temperature takes on negative values because in that case, there exists at least a condition of keeping physical values for $p$ and $ρ$

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Yun Soo Myung. 2008-12-10. On phantom thermodynamics with negative temperature. https://doi.org/10.1016/j.physletb.2008.12.011

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