Dynamical system analysis for steep potentials

doi:10.1088/1475-7516/2019/08/024

2019-08-20

Sudipta Das *

Banerjee, Manisha

Nandan Roy

DOI：10.1088/1475-7516/2019/08/024

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摘要

En 中文

In this work we have performed the dynamical system analysis for steep(er) exponential potentials considering different values of the steepness index n. We have performed the analysis using centre manifold theory as well as by employing numerical method. We have shown that in most of the cases, the higher values of steepness index corresponds to an unstable solution. We have shown that with this steep(er) potentials one can not have a phase transition from dark matter to dark energy in the past.

Keyword:

dark energy theory

dark energy experiments

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期刊

Journal of Cosmology and Astroparticle Physics

IF:

5.9

论文数:

1.3W

被引数:

4.7W

机构

Visva Bharati University

学者数:

1.7K

论文数: 1.3K

被引数: 3

naresuan university

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2.1K

论文数: 1.5K

被引数: 2

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