Dynamics of quintom and hessence energies in loop quantum cosmology

Hao Wei*, Shuang Nan Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number063005
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume76
Issue number6
DOIs
Publication statusPublished - 12 Sept 2007
Externally publishedYes

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