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Title of Journal: Gen Relativ Gravit

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Abbravation: General Relativity and Gravitation

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Springer US

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DOI

10.1007/s10156-005-0389-8

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1572-9532

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A class of LQCinspired models for homogeneous an

Authors: S Kalyana Rama
Publish Date: 2016/11/05
Volume: 48, Issue: 12, Pages: 155-
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Abstract

The dynamics of a 3 + 1 dimensional homogeneous anisotropic universe is modified by loop quantum cosmology and consequently it has generically a big bounce in the past instead of a bigbang singularity This modified dynamics can be well described by effective equations of motion We generalise these effective equations of motion empirically to d + 1 dimensions The generalised equations involve two functions and may be considered as a class of LQCinspired models for d + 1 dimensional early universe cosmology As a special case one can now obtain a universe which has neither a big bang singularity nor a big bounce but approaches asymptotically a ‘Hagedorn like’ phase in the past where its density and volume remain constant In a few special cases we also obtain explicit solutions

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