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New exact solutions in multi-scalar field cosmology

Published 28 July 2023 © 2023 IOP Publishing Ltd and Sissa Medialab
, , Citation Jorge G. Russo JCAP07(2023)066 DOI 10.1088/1475-7516/2023/07/066

1475-7516/2023/07/066

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.

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10.1088/1475-7516/2023/07/066