Reconstruction of Dynamical Dark Energy Potentials: Quintessence, Tachyon and interacting models

Autor:	Rajvanshi, Manvendra Pratap, Bagla, J. S.
Rok vydání:	2019
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics
Zdroj:	J Astrophys Astron (2019) 40: 44
Druh dokumentu:	Working Paper
DOI:	10.1007/s12036-019-9613-2
Popis:	Dynamical models for dark energy are an alternative to the cosmological constant. It is important to investigate properties of perturbations in these models and go beyond the smooth FRLW cosmology. This allows us to distinguish different dark energy models with the same expansion history. For this, one often needs the potential for a particular expansion history. We study how such potentials can be reconstructed obtaining closed formulae for potential or reducing the problem to quadrature. We consider three classes of models here: tachyons, quintessence, and, interacting dark energy. We present results for constant w and the CPL parameterization. The method given here can be generalized to any arbitrary form of w(z). Comment: 9 pages, 5 figures, minor corrections and references updated. Final version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1905.01103 Zobrazit plný text záznamu View this record from Arxiv