A symmetry for vanishing cosmological constant in an extra dimensional toy model

Details A symmetry for vanishing cosmological constant in an extra dimensional toy model A symmetry for vanishing cosmological constant in an extra dimensional toy model

2004-10-06

arxiv.org/abs/hep-th/0410063v4

Phys.Lett. B621 (2005) 11-17

Physics

High Energy Physics

High Energy Physics - Theory

Typos are corrected. Two paragraphs and two references are added. To appear in PLB

Scientific paper

10.1016/j.physletb.2005.06.037

We introduce a symmetry principle that forbids a bulk cosmological constant
in six and ten dimensions. Then the symmetry is extended so that it insures
absence of 4-dimensional cosmological constant induced by the six dimensional
curvature scalar, at least, for a class of metrics. A small cosmological
constant may be induced by breaking of the symmetry by a small amount.

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