39 citations · 135 across the 15 of their papers we have counts for
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Effective action for EPRL/FK spin foam models
Aleksandar Mikovic, Marko Vojinovic
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 sp…
Poincare 2-group and quantum gravity
Aleksandar Mikovic, Marko Vojinovic
We show that General Relativity can be formulated as a constrained topological theory for flat 2-connections associated to the Poincaré 2-group. Matter can be consistently coupled…
Effective action and semiclassical limit of spin foam models
A. Mikovic, M. Vojinovic
We define an effective action for spin foam models of quantum gravity by adapting the background field method from quantum field theory. We show that the Regge action is the leadin…
Graviton propagator asymptotics and the classical limit of ELPR/FK spin foam models
Aleksandar Mikovic, Marko Vojinovic
We study the classical limit of the ELPR/FK spin foam models by analyzing the large-distance asymptotics of the corresponding graviton propagators. This is done by examining the la…
A finiteness bound for the EPRL/FK spin foam model
Aleksandar Mikovic, Marko Vojinovic
We show that the EPRL/FK spin foam model of quantum gravity has an absolutely convergent partition function if the vertex amplitude is divided by an appropriate power of the pr…