New exact solutions in multi-scalar field cosmology

Abstract

We use the method of the superpotential to derive exact solutions describing inflationary cosmologies in multi-field models. An example that describes a solution that interpolates between two de Sitter universes is described in detail. New analytical solutions for axion-dilaton cosmologies are also presented.

arXiv comment22 pages, 6 figures. V3 Expanded (new sections and references added). Published version in JCAP

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