Cosmological solutions in Hořava-Lifshitz gravity

Abstract

We perform a detailed study on the integrability of the Hoř% ava-Lifshitz scalar field cosmology in a Friedmann--Lema\^ı% tre--Robertson--Walker background spacetime. The approach we follow to determine the integrability is that of the Singularity Analysis. More specifically, we test if the gravitational field equations possesses the Painlevé property. For the exponential potential of the scalar field we are able to perform an analytic explicit integration of the field equations and write the solution in terms of Laurent expansion and more specifically write the solution in terms of Right Painlevé series.

8 pages, no figures, discussion improved, to appear in Zeitschrift für Naturforschung A

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• Generalized Scalar Field Cosmologies: A Global Dynamical Systems Formulation
• Generalized scalar field cosmologies: theorems on asymptotic behavior