Patch dualities and remarks on nonstandard cosmologies

Details Patch dualities and remarks on nonstandard cosmologies Patch dualities and remarks on nonstandard cosmologies

2004-10-06

arxiv.org/abs/gr-qc/0410027v3

Phys.Rev. D71 (2005) 023511

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, 9 figures; v2: discussion improved, references added; v3: the content of gr-qc/0410111 has been moved here, discussi

Scientific paper

10.1103/PhysRevD.71.023511

In this paper we establish dualities between inflationary, cyclic/ekpyrotic, and phantom cosmologies within the patch formalism approximating high-energy effects in scenarios with extra dimensions. The exact dualities relating the four-dimensional spectra are broken in favour of their braneworld counterparts; the dual solutions display new interesting features because of the modification of the effective Friedmann equation on the brane. We then address some qualitative issues about phantomlike cosmologies without phantom matter.

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