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Dark Energy From Vacuum Fluctuations

Djorgovski, S. G. and Gurzadyan, V. G. (2007) Dark Energy From Vacuum Fluctuations. Nuclear Physics B - Proceedings Supplements, 173 . pp. 6-10. ISSN 0920-5632. doi:10.1016/j.nuclphysbps.2007.08.056.

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We describe briefly a novel interpretation of the physical nature of dark energy (DE), based on the vacuum fluctuations model by Gurzadyan & Xue, and describe an internally consistent solution for the behavor of DE as a function of redshift. A key choice is the nature of the upper bound used for the computation of energy density contributions by vacuum modes. We show that use of the comoving horizon radius produces a viable model, whereas use of the proper horizon radius is inconsistent with the observations. After introduction of a single phenomenological parameter, the model is consistent with all of the curently available data, and fits them as well as the standard cosmological constant model, while making testable predictions. While some substantial interpretative uncertainties remain, future developments of this model may lead to significant new insights into the physical nature of DE.

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Djorgovski, S. G.0000-0002-0603-3087
Additional Information:© 2007 Elsevier. Available online 22 November 2007. SGD acknowledges a partial support from the NSF grant AST-0407448 and the Ajax Foundation. We thank numerous colleagues for useful discussions.
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Ajax FoundationUNSPECIFIED
Record Number:CaltechAUTHORS:20100909-150310515
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19854
Deposited By: Tony Diaz
Deposited On:10 Sep 2010 02:54
Last Modified:08 Nov 2021 23:55

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