期刊
PHYSICS LETTERS B
卷 696, 期 3, 页码 273-277出版社
ELSEVIER
DOI: 10.1016/j.physletb.2010.12.025
关键词
Acceleration; Thermodynamics; Gravity
资金
- World Premier International Research Center Initiative (WPI initiative), MEXT, Japan
- Japan Society for Promotion of Science (JSPS) [21740167]
- Arizona State University Foundation
- National Science Foundation (KITP, UCSB) [PHY05-51164]
- U.S. Department of Energy [DE-FG02-05ER41418, DE-AC02-05CH11231]
- NRF/MEST [R32-2009-000-10130-0]
- CNRS
- Grants-in-Aid for Scientific Research [21740167] Funding Source: KAKEN
To accommodate the observed accelerated expansion of the universe, one popular idea is to invoke a driving term in the Friedmann-Lemaitre 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. (C) 2010 Elsevier B.V. All rights reserved.
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