Extended Phase Space Analysis of Interacting Dark Energy Models in Loop Quantum Cosmology - Archive ouverte HAL
Article Dans Une Revue Physical Review D Année : 2017

Extended Phase Space Analysis of Interacting Dark Energy Models in Loop Quantum Cosmology

Hmar Zonunmawia
  • Fonction : Auteur
Wompherdeiki Khyllep
  • Fonction : Auteur
Nandan Roy
  • Fonction : Auteur
Jibitesh Dutta
  • Fonction : Auteur

Résumé

The present work deals with the dynamical system investigation of interacting dark energy models (quintessence and phantom) in the framework of loop quantum cosmology by taking into account a broad class of self-interacting scalar field potentials. The main reason for studying potentials beyond the exponential type is to obtain additional critical points which can yield more interesting cosmological solutions. The stability of critical points and the asymptotic behavior of the phase space are analyzed using dynamical system tools and numerical techniques. We study two classes of interacting dark energy models and consider two specific potentials as examples: the hyperbolic potential and the inverse power-law potential. We find a rich and interesting phenomenology, including the avoidance of big rip singularities due to loop quantum effects, smooth and nonlinear transitions from matter domination to dark energy domination, and finite periods of phantom domination with dynamical crossing of the phantom barrier.

Dates et versions

hal-01645956 , version 1 (23-11-2017)

Identifiants

Citer

Hmar Zonunmawia, Wompherdeiki Khyllep, Nandan Roy, Jibitesh Dutta, Nicola Tamanini. Extended Phase Space Analysis of Interacting Dark Energy Models in Loop Quantum Cosmology. Physical Review D, 2017, 96 (8), pp.083527. ⟨10.1103/PhysRevD.96.083527⟩. ⟨hal-01645956⟩
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