Effective action for EPRL/FK spin foam models

Details Effective action for EPRL/FK spin foam models Effective action for EPRL/FK spin foam models

2011-10-27

arxiv.org/abs/1110.6114v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

v2: some changes in text, new references added; 4 pages, proceedings of Loops 11 conference, Madrid; to appear in Journal of P

Scientific paper

We show that a natural modification of the EPRL/FK vertex amplitude gives a
finite spin foam model whose effective action gives the Einstein-Hilbert action
in the limit of large spins and arbitrarily fine spacetime triangulations. The
first-order quantum corrections can be easily computed and we show how to
calculate the higher-order corrections.

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