Asymptotic analysis of the EPRL model with timelike tetrahedra

Beitrag in einer Fachzeitschrift

Details zur Publikation

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


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


Sahlmann, H., Kaminski, W., & Kisielowski, M. (2018). Asymptotic analysis of the EPRL model with timelike tetrahedra. Classical and Quantum Gravity, 35(13).

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


Zuletzt aktualisiert 2019-03-01 um 20:10