Signature change, vacuum condensation and cosmological constant

Details Signature change, vacuum condensation and cosmological constant Signature change, vacuum condensation and cosmological constant

2007-03-30

arxiv.org/abs/gr-qc/0703154v2

Gen.Rel.Grav.40:1467-1474,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, minor revision

Scientific paper

10.1007/s10714-007-0561-9

We proposes an alternative model of duality symmetry, based on the previously obtained divergence theory, including an scalar field, an internal vector and a metric signature. At some small scale an effective scalar field equation has appeared whose potential acts like a Higgs one, where the metric signature plays the role of an order parameter. Non-vanishing Vacuum condensation of this Higgs field occurs once a signature change from Euclidean to Lorentzian is formed. The mass scale of Higgs field excitations around this vacuum may contribute, in the Lorentzian sector, to the cosmological constant, in agreement with observations.

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