Abstract
This paper treats nonrelativistic matter and a scalar field with a monotonically decreasing potential minimally coupled to gravity in flat Friedmann-Lemaître-Robertson-Walker cosmology. The field equations are reformulated as a three-dimensional dynamical system on an extended compact state space, complemented with cosmographic diagrams. A dynamical systems analysis provides global dynamical results describing possible asymptotic behavior. It is shown that one should impose global and asymptotic bounds on to obtain viable cosmological models that continuously deform cosmology. In particular we introduce a regularized inverse power-law potential as a simple specific example.
5 More- Received 4 August 2015
DOI:https://doi.org/10.1103/PhysRevD.92.103502
© 2015 American Physical Society