Journal
CLASSICAL AND QUANTUM GRAVITY
Volume 34, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6382/aa549a
Keywords
loop quantum gravity; group field theory; cosmology
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Funding
- John Templeton Foundation [PS-GRAV/1401]
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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 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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