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arXiv · 1602.08271

Bouncing cosmologies from quantum gravity condensates

Daniele Oriti·Lorenzo Sindoni·Edward Wilson-Ewing
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Abstract

We show how the large-scale cosmological dynamics can be obtained from the hydrodynamics of isotropic group field theory condensate states in the Gross-Pitaevskii approximation. The correct Friedmann equations are recovered in the semi-classical limit for some choices of the parameters in the action for the group field theory, and quantum gravity corrections arise in the high-curvature regime causing a bounce which generically resolves the big-bang and big-crunch singularities.

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Daniele Oriti, Lorenzo Sindoni, Edward Wilson-Ewing. 2016-02-26. Bouncing cosmologies from quantum gravity condensates. https://doi.org/10.1088/1361-6382/aa549a

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