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- W1636581330 abstract "We study the classical limit of ELPR/FK spin foam models by computing the large-distance asymptotics of the spin foam graviton propagator. This is done by analyzing the large-spin asymptotics of the boundary spin-network wavefunction which corresponds to a flat space. By using the stationary phase method we determine the wavefunction asymptotics, which then determines the large-distance asymptotics of the corresponding graviton propagator. We show that the graviton propagator behaves for large distances as the inverse distance to the fourth power, which implies that general relativity is not the classical limit of the ELPR/FK spin foam models. Our result is a direct consequence of the large-spin asymptotics of the ELPR/FK spin-foam vertex amplitude and we show that the vertex amplitude can be modified such that the new amplitude has the desired asymptotics." @default.
- W1636581330 created "2016-06-24" @default.
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- W1636581330 date "2011-03-08" @default.
- W1636581330 modified "2023-09-27" @default.
- W1636581330 title "Graviton propagator asymptotics and the classical limit of ELPR/FK spin foam models" @default.
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