Cosmological implications of a supersymmetric extension of the Brans-Dicke theory

Details Cosmological implications of a supersymmetric extension of the Brans-Dicke theory Cosmological implications of a supersymmetric extension of the Brans-Dicke theory

2007-09-11

arxiv.org/abs/0709.1638v1

AIPConf.Proc.957:371-374,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages. To appear in the proceedings of PASCOS-07: 13th International Symposium on Particles, Strings and Cosmology

Scientific paper

10.1063/1.2823804

In the Brans-Dicke theory the Planck mass is replaced by a dynamical scalar field. We consider here the supersymmetric analogous of this mechanism replacing in the supergravity Lagrangian the Planck mass with a chiral superfield. This analysis is motivated by the research of possible connections between supersymmetric Dark Matter scenarios and Dark Energy models based on Brans-Dicke-like theories. We find that, contrary to the original Brans-Dicke theory, in its supersymmetric analogous the gravitational sector does not couple to the matter sector in a universal metric way. As a result, violations of the weak equivalence principle could be present in such a scenario.

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