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2004

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/12377

Dark energy equation of state and anthropic selection

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http://dx.doi.org/10.1103/PhysRevD.69.063521

Abstract

We explore the possibility that the dark energy is due to a potential of a scalar field and that the magnitude and the slope of this potential in our part of the Universe are largely determined by anthropic selection effects. We find that, in some models, the most probable values of the slope are very small, implying that the dark energy density stays constant to very high accuracy throughout cosmological evolution. In other models, however, the most probable values of the slope are such that the slow roll condition is only marginally satisfied, leading to a recollapse of the local universe on a time scale comparable to the lifetime of the Sun. In the latter case, the effective equation of state varies appreciably with the redshift, leading to a number of testable predictions.

Subject

Energia fosca (Astronomia), Equacions d'estat, Principi antròpic

Subject (English)

Dark energy (Astronomy), Anthropic principle, Equations of state

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

GARRIGA TORRES, Jaume, LINDE, A. D. and VILENKIN, A. (Alexander). Dark energy equation of state and anthropic selection. Physical Review D. 2004. Vol. 69, num. 6, pags. 063521-1-063521-12. ISSN 0556-2821. [consulted: 9 of August of 2026]. Available at: https://hdl.handle.net/2445/12377

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