Field theory models for variable cosmological constant

Details Field theory models for variable cosmological constant Field theory models for variable cosmological constant

2001-02-21

arxiv.org/abs/hep-th/0102142v3

Phys.Rev. D64 (2001) 063509

Physics

High Energy Physics

High Energy Physics - Theory

A reference added

Scientific paper

10.1103/PhysRevD.64.063509

Anthropic solutions to the cosmological constant problem require seemingly unnatural scalar field potentials with a very small slope or domain walls (branes) with a very small coupling to a four-form field. Here we introduce a class of models in which the smallness of the corresponding parameters can be attributed to a spontaneously broken discrete symmetry. We also demonstrate the equivalence of scalar field and four-form models. Finally, we show how our models can be naturally embedded into a left-right extension of the standard model.

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