Asymptotic analysis of the EPRL model with timelike tetrahedra

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Sahlmann H, Kaminski W, Kisielowski M
Zeitschrift: Classical and Quantum Gravity
Verlag: IOP PUBLISHING LTD
Jahr der Veröffentlichung: 2018
Band: 35
Heftnummer: 13
ISSN: 0264-9381
Sprache: Englisch


Abstract

We study the asymptotic behaviour of the vertex amplitude for the EPRL spin foam model extended to include timelike tetrahedra. We analyze both, tetrahedra of signature --- (standard EPRL), as well as of signature +-- (Hnybida-Conrady extension), in a unified fashion. However, we assume all faces to be of signature --. We find that the critical points of the extended model are described again by 4-simplices and the phase of the amplitude is equal to the Regge action. Interestingly, in addition to the Lorentzian and Euclidean sectors there appear also split signature 4-simplices.


FAU-Autoren / FAU-Herausgeber

Kisielowski, Marcin Dr.
Lehrstuhl für Theoretische Physik
Sahlmann, Hanno Prof. Dr.
Professur für Theoretische Physik


Autor(en) der externen Einrichtung(en)
University of Warsaw / Uniwersytet Warszawski


Zitierweisen

APA:
Sahlmann, H., Kaminski, W., & Kisielowski, M. (2018). Asymptotic analysis of the EPRL model with timelike tetrahedra. Classical and Quantum Gravity, 35(13). https://dx.doi.org/10.1088/1361-6382/aac6a4

MLA:
Sahlmann, Hanno, Wojciech Kaminski, and Marcin Kisielowski. "Asymptotic analysis of the EPRL model with timelike tetrahedra." Classical and Quantum Gravity 35.13 (2018).

BibTeX: 

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