Phase space analysis of interacting dark energy in f(T) cosmology

✍ Scribed by Jamil, Mubasher ;Yesmakhanova, Kuralay ;Momeni, Davood ;Myrzakulov, Ratbay

• Book ID: 119932086
• Publisher: Walter de Gruyter GmbH
• Year: 2012
• Tongue: English
• Weight: 285 KB
• Volume: 10
• Category: Article
• ISSN: 2391-5471
• DOI: 10.2478/s11534-012-0103-2

✦ Synopsis

In this paper, we examine the interacting dark energy model in (T ) cosmology. We assume dark energy as a perfect fluid and choose a specific cosmologically viable form (T ) = β √ T . We show that there is one attractor solution to the dynamical equation of (T ) Friedmann equations. Further we investigate the stability in phase space for a general (T ) model with two interacting fluids. By studying the local stability near the critical points, we show that the critical points lie on the sheet * = ( -1) * in the phase space, spanned by coordinates ( Ω T ). From this critical sheet, we conclude that the coupling between the dark energy and matter ∈ (-2 0).