Dynamics of k-essence in loop quantum cosmology *

In this paper, we study the dynamics of k-essence in loop quantum cosmology (LQC). The study indicates that the loop quantum gravity (LQG) effect plays a key role only in the early epoch of the universe and is diluted in the later stages. The fixed points in LQC are basically consistent with those in standard Friedmann-Robertson-Walker (FRW) cosmology. For most of the attractor solutions, the stability conditions in LQC are in agreement with those for the standard FRW universe. For some special fixed points, however, tighter constraints are imposed thanks to the LQG effect.

Automated summary

This study finds that the fixed points in LQC are consistent with standard FRW cosmology, with stability conditions for most attractor solutions also aligned. However, tighter constraints are imposed on some special fixed points due to the LQG effect, which plays a key role only in the early epoch of the universe and dissipates in later stages.