Entropic accelerating universe

Damien Easson; Paul H. Frampton; George F. Smoot

doi:10.1016/j.physletb.2010.12.025

Entropic accelerating universe

Damien Easson, Paul H. Frampton, George F. Smoot

Physics

Research output: Contribution to journal › Article › peer-review

150 Scopus citations

Abstract

To accommodate the observed accelerated expansion of the universe, one popular idea is to invoke a driving term in the Friedmann-Lemaître equation of dark energy which must then comprise 70% of the present cosmological energy density. We propose an alternative interpretation which takes into account the entropy and temperature intrinsic to the horizon of the universe due to the information holographically stored there. Dark energy is thereby obviated and the acceleration is due to an entropic force naturally arising from the information storage on the horizon surface screen. We consider an additional quantitative approach inspired by surface terms in general relativity and show that this leads to the entropic accelerating universe.

Original language	English (US)
Pages (from-to)	273-277
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	696
Issue number	3
DOIs	https://doi.org/10.1016/j.physletb.2010.12.025
State	Published - Jan 31 2011

Keywords

Acceleration
Gravity
Thermodynamics

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2010.12.025

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abstract = "To accommodate the observed accelerated expansion of the universe, one popular idea is to invoke a driving term in the Friedmann-Lema{\^i}tre equation of dark energy which must then comprise 70% of the present cosmological energy density. We propose an alternative interpretation which takes into account the entropy and temperature intrinsic to the horizon of the universe due to the information holographically stored there. Dark energy is thereby obviated and the acceleration is due to an entropic force naturally arising from the information storage on the horizon surface screen. We consider an additional quantitative approach inspired by surface terms in general relativity and show that this leads to the entropic accelerating universe.",

keywords = "Acceleration, Gravity, Thermodynamics",

author = "Damien Easson and Frampton, {Paul H.} and Smoot, {George F.}",

note = "Funding Information: We each thank our colleagues for their contagious energy and enthusiasm and IPMU for providing the venue that encouraged this work. This work was supported by the World Premier International Research Center Initiative (WPI initiative), MEXT , Japan. The work of D.A.E. is supported in part by a Grant-in-Aid for Scientific Research ( 21740167 ) from the Japan Society for Promotion of Science (JSPS) , by funds from the Arizona State University Foundation and by the National Science Foundation (KITP, UCSB) under Grant No. PHY05-51164 . The work of P.H.F. was supported in part by U.S. Department of Energy Grant No. DE-FG02-05ER41418 . G.F.S.'s work was supported in part by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 , by WCU program of NRF/MEST ( R32-2009-000-10130-0 ), and by CNRS Chaire Blaise Pascal . ",

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doi = "10.1016/j.physletb.2010.12.025",

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AU - Easson, Damien

AU - Frampton, Paul H.

AU - Smoot, George F.

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N2 - To accommodate the observed accelerated expansion of the universe, one popular idea is to invoke a driving term in the Friedmann-Lemaître equation of dark energy which must then comprise 70% of the present cosmological energy density. We propose an alternative interpretation which takes into account the entropy and temperature intrinsic to the horizon of the universe due to the information holographically stored there. Dark energy is thereby obviated and the acceleration is due to an entropic force naturally arising from the information storage on the horizon surface screen. We consider an additional quantitative approach inspired by surface terms in general relativity and show that this leads to the entropic accelerating universe.

AB - To accommodate the observed accelerated expansion of the universe, one popular idea is to invoke a driving term in the Friedmann-Lemaître equation of dark energy which must then comprise 70% of the present cosmological energy density. We propose an alternative interpretation which takes into account the entropy and temperature intrinsic to the horizon of the universe due to the information holographically stored there. Dark energy is thereby obviated and the acceleration is due to an entropic force naturally arising from the information storage on the horizon surface screen. We consider an additional quantitative approach inspired by surface terms in general relativity and show that this leads to the entropic accelerating universe.

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KW - Thermodynamics

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Entropic accelerating universe

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Keywords

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