Does the big rip happen in LQC?

[MTd2]

Hmm, right on spot. Although this paper was not related to my question, it was what made me free associate with my question.

BTW, why Marcus is ignoring me? :(

 

[MTd2]

Look at what I found:

http://arxiv.org/abs/0907.5591v3

Non-singular Ekpyrotic/Cyclic model in Loop Quantum Cosmology
Authors: Thomas Cailleteau, Parampreet Singh, Kevin Vandersloot
(Submitted on 31 Jul 2009 (v1), last revised 23 Oct 2009 (this version, v3))

Abstract: We study the role of non-perturbative quantum gravity effects in the Ekpyrotic/Cyclic model using the effective framework of loop quantum cosmology in the presence of anisotropies. We show that quantum geometric modifications to the dynamical equations near the Planck scale as understood in the quantization of Bianchi-I spacetime in loop quantum cosmology lead to the resolution of classical singularity and result in a non-singular transition of the universe from the contracting to the expanding branch. In the Planck regime, the universe undergoes multiple small bounces and the anisotropic shear remains bounded throughout the evolution. A novel feature, which is absent for isotropic models, is a natural turn around of the moduli field from the negative region of the potential leading to a cyclic phenomena as envisioned in the original paradigm. Our work suggests that incorporation of quantum gravitational effects in the Ekpyrotic/Cyclic model may lead to a viable scenario without any violation of the null energy condition.