Black hole and holographic dark energy

Details Black hole and holographic dark energy Black hole and holographic dark energy

2007-02-06

arxiv.org/abs/gr-qc/0702032v2

Phys.Lett.B649:247-251,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11pages, 1 figure, version to appear in PLB

Scientific paper

10.1016/j.physletb.2007.04.026

We discuss the connection between black hole and holographic dark energy. We examine the issue of the equation of state (EOS) for holographic energy density as a candidate for the dark energy carefully. This is closely related to the EOS for black hole, because the holographic dark energy comes from the black hole energy density. In order to derive the EOS of a black hole, we may use its dual (quantum) systems. Finally, a regular black hole without the singularity is introduced to describe an accelerating universe inside the cosmological horizon. Inspired by this, we show that the holographic energy density with the cosmological horizon as the IR cutoff leads to the dark energy-dominated universe with $\omega_{\rm \Lambda}=-1$.

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