caa a22 4500 445385952 CHVBK 20180317143032.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10714-010-0983-7 doi (NATIONALLICENCE)springer-10.1007/s10714-010-0983-7 Asymptotics of 4d spin foam models [Elektronische Daten] [John Barrett, Richard Dowdall, Winston Fairbairn, Henrique Gomes, Frank Hellmann, Roberto Pereira] 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. Springer Science+Business Media, LLC, 2010 Quantum gravity nationallicence Spin foam models nationallicence Barrett John School of Mathematical Sciences, University of Nottingham, University Park, NG7 2RD, Nottingham, UK aut Dowdall Richard School of Mathematical Sciences, University of Nottingham, University Park, NG7 2RD, Nottingham, UK aut Fairbairn Winston School of Mathematical Sciences, University of Nottingham, University Park, NG7 2RD, Nottingham, UK aut Gomes Henrique School of Mathematical Sciences, University of Nottingham, University Park, NG7 2RD, Nottingham, UK aut Hellmann Frank School of Mathematical Sciences, University of Nottingham, University Park, NG7 2RD, Nottingham, UK aut Pereira Roberto Centre de Physique Théorique, Luminy, Case 907, 13288, Marseille Cedex 9, France aut General Relativity and Gravitation Springer US; http://www.springer-ny.com 43/9(2011-09-01), 2421-2436 0001-7701 43:9<2421 2011 43 10714 https://doi.org/10.1007/s10714-010-0983-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10714-010-0983-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barrett John School of Mathematical Sciences, University of Nottingham, University Park, NG7 2RD, Nottingham, UK aut NATIONALLICENCE 700 1- Dowdall Richard School of Mathematical Sciences, University of Nottingham, University Park, NG7 2RD, Nottingham, UK aut NATIONALLICENCE 700 1- Fairbairn Winston School of Mathematical Sciences, University of Nottingham, University Park, NG7 2RD, Nottingham, UK aut NATIONALLICENCE 700 1- Gomes Henrique School of Mathematical Sciences, University of Nottingham, University Park, NG7 2RD, Nottingham, UK aut NATIONALLICENCE 700 1- Hellmann Frank School of Mathematical Sciences, University of Nottingham, University Park, NG7 2RD, Nottingham, UK aut NATIONALLICENCE 700 1- Pereira Roberto Centre de Physique Théorique, Luminy, Case 907, 13288, Marseille Cedex 9, France aut NATIONALLICENCE 773 0- General Relativity and Gravitation Springer US; http://www.springer-ny.com 43/9(2011-09-01), 2421-2436 0001-7701 43:9<2421 2011 43 10714 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer