Symmetries and the cosmological constant puzzle

Details Symmetries and the cosmological constant puzzle Symmetries and the cosmological constant puzzle

2007-04-11

arxiv.org/abs/0704.1436v3

Phys.Lett.B651:306-312,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, more relevant refs, refining cutoff definition of cosmological constant + eq.for regularized pressure added

Scientific paper

10.1016/j.physletb.2007.06.040

We outline the evaluation of the cosmological constant in the framework of the standard field-theoretical treatment of vacuum energy and discuss the relation between the vacuum energy problem and the gauge-group spontaneous symmetry breaking. We suggest possible extensions of the 't Hooft-Nobbenhuis symmetry, in particular, its complexification till duality symmetry and discuss the compatible implementation on gravity. We propose to use the discrete time-reflection transform to formulate a framework in which one can eliminate the huge contributions of vacuum energy into the effective cosmological constant and suggest that the breaking of time--reflection symmetry could be responsible for a small observable value of this constant.

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