Coupled phantom field in loop quantum cosmology

Details Coupled phantom field in loop quantum cosmology Coupled phantom field in loop quantum cosmology

2007-06-23

arxiv.org/abs/0706.3467v2

Thai Journal of Physics Series 3: Proceedings of the SIAM Physics Congress 2007 and the Thai National Astronomy Meeting 2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, 5 figures, invited talk at the SIAM Physics Congress 2007 and the Thai National Astronomy Meeting 2007, Nakorn Pathom

Scientific paper

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.

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