Cited by 42Noncommutative and Quantum Gravity TheoriesBlack Holes and Theoretical PhysicsRelativity and Gravitational Theory

Simple spin networks as Feynman graphs

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Freidel, L., Krasnov, K.·2000·Journal of Mathematical Physics

Abstract

We show how spin networks can be described and evaluated as Feynman integrals over an internal space. This description can, in particular, be applied to the so-called simple SO(D) spin networks that are of importance for higher-dimensional generalizations of loop quantum gravity. As an illustration of the power of the new formalism, we use it to obtain the asymptotics of an amplitude for the D simplex and show that its oscillatory part is given by the Regge action.

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  • For any non-degenerate triangulation with finitely many simplices, the Lorentzian amplitude (113) is finite, with the integral over simple continuous representations of the Lorentz group converging absolutely.

    “In fact, it was proven [105], using the results of [104], that, for any non-degenerate and finite (finite number of simplices) triangulation, the amplitude (113) is finite, in the sense that the integral over the simple continuous representations of the Lorentz group converges absolutely.”
  • In most interesting cases, the evaluation of these spin networks is finite, i.e. integrable, as proven in [104].

    “Moreover, in most of the interesting cases the evaluation of these spin networks is finite, i.e. they are integrable, as was proven in [104].”

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Authors
Freidel, L., & Krasnov, K.
Affiliations
  • École Normale Supérieure de Lyon (FR)
  • Pennsylvania State University (US)
Venue
Journal of Mathematical Physics
Published
2000-04-01
Volume
41
Issue
4
Pages
1681-1690
ISSN
  • 0022-2488 (ISSN-L)
  • 1089-7658
OpenAlex
W2140632344
Cited by
42
References
6
Citations by year
2022: 2 · 2016: 1 · 2012: 2
FWCI
4.07
Type
journal article
Language
en
Open access
Locations
  • Journal of Mathematical Physics (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
Keywords
spin networks, Feynman integrals, loop quantum gravity, higher-dimensional generalization, Regge calculus, Regge action, asymptotic analysis, internal space

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