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General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Theory, hep-th
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.
