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Entropy bounds and dark energy

Hsu, Stephen D.H. (2004) Entropy bounds and dark energy. Physics Letters B, 594 (1-2). pp. 13-16. ISSN 0370-2693. doi:10.1016/j.physletb.2004.05.020.

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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 ∼10^(−10) eV^4, thereby resolving the cosmological constant problem. We note that the dark energy equation of state in these scenarios is w≡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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Additional Information:© 2004 Published by Elsevier B.V. Received 10 March 2004, Revised 29 April 2004, Accepted 3 May 2004, Available online 9 June 2004. The author would like to thank M. Graesser, M. Kamionkowski, B. Murray and M. Wise for comments, and the Caltech theory group for its hospitality. This work was supported in part under DOE contract DE-FG06-85ER40224.
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Department of Energy (DOE)DE-FG06-85ER40224
Issue or Number:1-2
Record Number:CaltechAUTHORS:20170710-131412020
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Official Citation:Stephen D.H. Hsu, Entropy bounds and dark energy, Physics Letters B, Volume 594, Issues 1–2, 29 July 2004, Pages 13-16, ISSN 0370-2693, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:78898
Deposited By: Ruth Sustaita
Deposited On:11 Jul 2017 18:01
Last Modified:15 Nov 2021 17:44

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