Phantom energy from graded algebras

Details Phantom energy from graded algebras Phantom energy from graded algebras

2006-03-20

arxiv.org/abs/hep-th/0603160v3

Mod.Phys.Lett.A22:29-40,2007

Physics

High Energy Physics

High Energy Physics - Theory

8 pages no figures; references added and discussion on condensate of vector grassman fields added. To be published MPLA

Scientific paper

10.1142/S0217732307022372

We construct a model of phantom energy using the graded Lie algebra SU(2/1). The negative kinetic energy of the phantom field emerges naturally from the graded Lie algebra, resulting in an equation of state with w<-1. The model also contains ordinary scalar fields and anti-commuting (Grassmann) vector fields which can be taken as two component dark matter. A potential term is generated for both the phantom fields and the ordinary scalar fields via a postulated condensate of the Grassmann vector fields. Since the phantom energy and dark matter arise from the same Lagrangian the phantom energy and dark matter of this model are coupled via the Grassman vector fields. In the model presented here phantom energy and dark matter come from a gauge principle rather than being introduced in an ad hoc manner.

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