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General Relativity and Quantum Cosmology

arXiv:0706.3467 (gr-qc)
[Submitted on 23 Jun 2007 (v1), last revised 3 Jul 2007 (this version, v2)]

Title:Coupled phantom field in loop quantum cosmology

Authors:Burin Gumjudpai (TPTP Naresuan U.)
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Abstract: A model of phantom scalar field dark energy under exponential potential coupling to barotropic dark matter fluid in loop quantum cosmology is addressed here. We derive a closed-autonomous system for cosmological dynamics in this scenario. The expansion in loop quantum universe has a bounce even in presence of the phantom field. The greater decaying from dark matter to dark phantom energy results in greater energy storing in the phantom field. This results in further turning point of the field. Greater coupling also delays bouncing time. In the case of phantom decaying, oscillation in phantom density makes small oscillation in the increasing matter density.
Comments: 5 pages, 5 figures, invited talk at the SIAM Physics Congress 2007 and the Thai National Astronomy Meeting 2007, Nakorn Pathom, Thailand
Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)
Cite as: arXiv:0706.3467 [gr-qc]
  (or arXiv:0706.3467v2 [gr-qc] for this version)
  https://doi.org/10.48550/arXiv.0706.3467
Journal reference: Thai Journal of Physics Series 3: Proceedings of the SIAM Physics Congress 2007 and the Thai National Astronomy Meeting 2007

Submission history

From: Burin Gumjudpai [view email]
[v1] Sat, 23 Jun 2007 17:49:27 UTC (480 KB)
[v2] Tue, 3 Jul 2007 16:50:14 UTC (470 KB)
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