Advanced search
Start date
Betweenand
(Reference retrieved automatically from Google Scholar through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Studying the decay of the vacuum energy with the observed density fluctuation spectrum

Full text
Author(s):
Opher‚ R. ; Pelinson‚ A.
Total Authors: 2
Document type: Journal article
Source: Physical Review D; v. 70, n. 6, p. 063529, 2004.
Abstract

We investigate here models that suggest that the vacuum energy decays into cold dark matter (CDM) and show that the density fluctuation spectrum obtained from the cosmic microwave background (CMB) data together with large galaxy surveys (e.g., the Sloan Digital Sky Survey), puts strong limits on the rate of decay of the vacuum energy. CDM produced by a decaying vacuum energy would dilute the density fluctuation spectrum, created in the primordial universe and observed with large galaxy surveys at low redshifts. Our results indicate that the decay rate of the vacuum energy into CDM is extremely small. (AU)

FAPESP's process: 00/06770-2 - The cosmic microwave background radiation (CMBR) and structure formation in the universe
Grantee:Reuven Opher
Support Opportunities: Research Projects - Thematic Grants