Dynamics of interacting dark energy model in Einstein and Loop Quantum Cosmology

Abstract

We investigate the background dynamics when dark energy is coupled to dark matter in the universe described by Einstein cosmology and Loop Quantum Cosmology. We introduce a new general form of dark sector coupling, which presents us a more complicated dynamical phase space. Differences in the phase space in obtaining the accelerated scaling attractor in Einstein cosmology and Loop Quantum Cosmology are disclosed.

16 pages, 4 figures, references added, accepted by Phys. Rev. D

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