Cosmological Evolution of Hessence Dark Energy and Avoidance of the Big Rip

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dc.creatorWei, Hao
dc.creatorCai, Rong-Gen
dc.date2005-09-13
dc.date2005-12-14
dc.date.accessioned2026-07-07T11:03:53Z
dc.date.available2026-07-07T11:03:53Z
dc.descriptionRecently, many dark energy models whose equation-of-state parameter can cross the phantom divide $w_{de}=-1$ have been proposed. In a previous paper [Class. Quant. Grav. {\bf 22}, 3189 (2005); hep-th/0501160], we suggest such a model named hessence, in which a non-canonical complex scalar field plays the role of dark energy. In this work, the cosmological evolution of the hessence dark energy is investigated. We consider two cases: one is the hessnece field with an exponential potential, and the other is with a (inverse) power law potential. We separately investigate the dynamical system with four different interaction forms between hessence and background perfect fluid. It is found that the big rip never appears in the hessence model, even in the most general case, beyond particular potentials and interaction forms.
dc.description15 pages, 8 tables, revtex4; v2: references added; v3: published version
dc.identifierhttps://arxiv.org/abs/astro-ph/0509328
dc.identifierhttp://arxiv.org/abs/astro-ph/0509328
dc.identifierPhys.Rev.D72:123507,2005
dc.identifierdoi:10.1103/PhysRevD.72.123507
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188701
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleCosmological Evolution of Hessence Dark Energy and Avoidance of the Big Rip
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