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  Asymptotics of 4d spin foam models

Barrett, J. W., Dowdall, R. J., Fairbairn, W. J., Gomes, H., Hellmann, F., & Pereira, R. (2011). Asymptotics of 4d spin foam models. General Relativity and Gravitation, 43(9), 2421-2436. doi:10.1007/s10714-010-0983-7.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-04FD-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-04FE-7
Genre: Journal Article

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1003.1886 (Preprint), 192KB
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 Creators:
Barrett, John W., Author
Dowdall, Richard J., Author
Fairbairn, Winston J., Author
Gomes, Henrique, Author
Hellmann, Frank, Author
Pereira, Roberto1, Author
Affiliations:
1AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, escidoc:24008              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: 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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 Dates: 2010-03-092011
 Publication Status: Published in print
 Pages: 10 pages, Proceedings for the 2nd Corfu summer school and workshop on quantum gravity and quantum geometry, talk given by Winston J. Fairbairn
 Publishing info: -
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 Rev. Method: -
 Identifiers: arXiv: 1003.1886
DOI: 10.1007/s10714-010-0983-7
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Title: General Relativity and Gravitation
Source Genre: Journal
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Publ. Info: Dordrecht, etc. : Kluwer Academic Publishers [etc.]
Pages: - Volume / Issue: 43 (9) Sequence Number: - Start / End Page: 2421 - 2436 Identifier: ISSN: 0001-7701
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925263179