Dynamics of quintom and hessence energies in loop quantum cosmology
Creators
- 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
Identifiers
- DOI
- 10.1103/PhysRevD.76.063005;
- arXiv
- arXiv:0705.4002v3;
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