Holographic hessence models

2007/06/30 by Wen Zhao · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #astro-ph

paper · pdf · doi:10.1016/j.physletb.2007.08.083

published as Phys.Lett.B655:97-103,2007 · 10 pages, 5 figures, PLB accepted

openalex publication_date 2007/09/15 · arxiv created 2008/10/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We discuss the evolution of holographic hessence model, which satisfies the holographic principle and can naturally realizes the equation of state crossing -1. By discussing the evolution of the models in the w w' plane, we find that, if c≥1, w_he≥-1 and V<0 keep for all time, which are quintessence-like. However, if c<-1, which mildly favors the current observations, w_he evolves from w_he>-1 to w_he<-1, and the potential is a nonmonotonic function. In the earlier time, the potential must be rolled down, and then be climbed up. Considered the current constraint on the parameter c, we reconstruct the potential of the holographic hessence model.

Citations

• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• Cosmological evolution of a quintom model of dark energy
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Cosmological consequences of a rolling homogeneous scalar field
• Gravity on a brane in infinite-volume extra space
• k-Inflation

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