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Entropy Bounds and Dark Energy

Stephen D. H. Hsu
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Abstract

Entropy bounds render quantum corrections to the cosmological constant $Λ$ finite. Under certain assumptions, the natural value of $Λ$ is of order the observed dark energy density $\sim 10^{-10} {\rm eV}^4$, thereby resolving the cosmological constant problem. We note that the dark energy equation of state in these scenarios is $w \equiv p / ρ= 0$ over cosmological distances, and is strongly disfavored by observational data. Alternatively, $Λ$ in these scenarios might account for the diffuse dark matter component of the cosmological energy density.

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Stephen D. H. Hsu. 2004-05-05. Entropy Bounds and Dark Energy. https://doi.org/10.1016/j.physletb.2004.05.020

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