Cosmological perturbations and classical change of signature

Details Cosmological perturbations and classical change of signature Cosmological perturbations and classical change of signature

1995-09-27

arxiv.org/abs/gr-qc/9509053v1

Phys.Rev. D52 (1995) 6708-6716

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

35 pages, latex, 2 figures available at jmartin@ccr.jussieu.fr, to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.52.6708

Cosmological perturbations on a manifold admitting signature change are studied. The background solution consists in a Friedmann-Lemaitre-Robertson- Walker (FLRW) Universe filled by a constant scalar field playing the role of a cosmological constant. It is shown that no regular solution exist satisfying the junction conditions at the surface of change. The comparison with similar studies in quantum cosmology is made.

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