Published September 15, 2007 | Version v1
Journal article

Dynamics of quintom and hessence energies in loop quantum cosmology

  • 1. Physics Department, University of Alabama in Huntsville, Huntsville, Alabama 35899 (United States)
  • 2. Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)
  • 3. Department of Physics and Tsinghua Center for Astrophysics, Tsinghua University, Beijing 100084 (China)

Description

In the present work, we investigate the universe dominated by quintom or hessence energies in loop quantum cosmology (LQC). Interestingly enough, we find that there are some stable attractors in these two cases. In the case of quintom, all stable attractors have the feature of decelerated expansion. In the case of hessence, most of stable attractors have the feature of decelerated expansion while one stable attractor can have decelerated or accelerated expansion depend on the model parameter. In all cases, the equation-of-state parameter (EoS) of all stable attractors are larger than -1 and there is no singularity in the finite future. These results are different from the dynamics of phantom in LQC, or the ones of phantom, quintom, and hessence in classical Einstein gravity

Additional details

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
76
Journal Issue
6
Journal Page Range
p. 063005-063005.8
ISSN
0556-2821
CODEN
PRVDAQ

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39049661
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ATTRACTORS; COSMOLOGY; EQUATIONS OF STATE; GRAVITATION; PHANTOMS; QUANTUM FIELD THEORY; SINGULARITY; UNIVERSE
Descriptors DEC
EQUATIONS; FIELD THEORIES; MOCKUP; STRUCTURAL MODELS

Optional Information

Notes
(c) 2007 The American Physical Society