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arXiv 0808.0860gr-qc
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黑洞的幻影吸积与广义热力学第二定律

Phantom Accretion by Black Holes and the Generalized Second Law of Thermodynamics

J. A. S. Lima, S. H. Pereira, J. E. Horvath, Daniel C. Guariento

摘要:

从广义热力学第二定律出发,讨论了黑洞对具有非零化学势的幻影流体的吸积。对于具有正温度和负化学势的幻影流体,我们证明了吸积过程是可能的,并且保证幻影流体熵为正的条件与广义第二定律所要求的条件一致。特别是,这一结果提供了一个补充确认,宇宙幻影流体不需要有负温度。

英文摘要:

The accretion of a phantom fluid with non-zero chemical potential by black holes is discussed with basis on the Generalized Second Law of thermodynamics. For phantom fluids with positive temperature and negative chemical potential we demonstrate that the accretion process is possible, and that the condition guaranteeing the positiveness of the phantom fluid entropy coincides with the one required by Generalized Second Law. In particular, this result provides a complementary confirmation that cosmological phantom fluids do not need to have negative temperatures.

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