Scalar-tensor $σ$-cosmologies

Details Scalar-tensor $σ$-cosmologies Scalar-tensor $σ$-cosmologies

2000-11-24

arxiv.org/abs/gr-qc/0011086v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Research announcement, 2 pages, submitted for publication in the MG9 Proceedings

Scientific paper

We show that the scalar-tensor $\sigma$-model action is conformally
equivalent to general relativity with a minimally coupled wavemap with a
particular target metric. Inflation on the source manifold is then shown to
occur in a natural way due both to the arbitrary curvature couplings and the
wavemap self-interactions.

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