Smooth cosmological phase transition in the Horava-Lifshitz gravity

Details Smooth cosmological phase transition in the Horava-Lifshitz gravity Smooth cosmological phase transition in the Horava-Lifshitz gravity

2010-03-16

arxiv.org/abs/1003.3055v3

JCAP06(2010)025

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, 6 figures; v2. some comments and references added; v3. version to appear in JCAP

Scientific paper

10.1088/1475-7516/2010/06/025

We show that the cosmological phase transition from the first accelerated expansion in the early universe to the second accelerated expansion over the intermediate decelerated expansion is possible in the HL gravity without the ``detailed balance'' condition if the dark scalar energy density is assumed to be negative. Moreover, we obtain various evolutions depending on the scale factor and the expansion rate. Finally, we discuss the existence of the minimum scale in connection with the singularity free condition.

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