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Type: Journal article
Title: Dark energy density in models with split supersymmetry and degenerate vacua
Author: Froggatt, C.
Nevzorov, R.
Nielsen, H.
Citation: International Journal of Modern Physics A: particles and fields; gravitation; cosmology; nuclear physics, 2012; 27(11):1250063-1-1250063-17
Publisher: World Scientific Publishing
Issue Date: 2012
ISSN: 0217-751X
Statement of
C. Froggatt, R. Nevzorov, H. B. Nielsen
Abstract: In N = 1 supergravity supersymmetric and nonsupersymmetric Minkowski vacua originating in the hidden sector can be degenerate. In the supersymmetric phase in flat Minkowski space, nonperturbative supersymmetry breakdown may take place in the observable sector, inducing a nonzero and positive vacuum energy density. Assuming that such a supersymmetric phase and the phase in which we live are degenerate, we estimate the value of the cosmological constant. We argue that the observed value of the dark energy density can be reproduced in the split SUSY scenario of SUSY breaking if the SUSY breaking scale is of order of 1010 GeV.
Keywords: Dark energy; supersymmetry; supergravity
Rights: Copyright status unknown
DOI: 10.1142/S0217751X12500637
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