Asymptotics of 4d spin foam models

被引：0
|
作者：
John W. Barrett
Richard J. Dowdall
Winston J. Fairbairn
Henrique Gomes
Frank Hellmann
Roberto Pereira
机构：
[1] School of Mathematical Sciences,Department Mathematik
[2] University of Nottingham,undefined
[3] Universität Hamburg,undefined
[4] Centre de Physique Théorique,undefined
[5] MPI für Gravitationsphysik,undefined
[6] Albert Einstein Institute,undefined
来源：
General Relativity and Gravitation | 2011年 / 43卷
关键词：
Quantum gravity; Spin foam models;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We study the asymptotic properties of four-simplex amplitudes for various four-dimensional spin foam models. We investigate the semi-classical limit of the Ooguri, Euclidean and Lorentzian EPRL models using coherent states for the boundary data. For some classes of geometrical boundary data, the asymptotic formulae are given, in all three cases, by simple functions of the Regge action for the four-simplex geometry.
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页码：2421 / 2436
页数：15
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