Four-dimensional spinfoam quantum gravity with a cosmological constant: Finiteness and semiclassical limit

Han M (2021)


Publication Type: Journal article

Publication year: 2021

Journal

Book Volume: 104

Article Number: 104035

Journal Issue: 10

DOI: 10.1103/PhysRevD.104.104035

Abstract

We present an improved formulation of 4-dimensional Lorentzian spinfoam quantum gravity with a cosmological constant. The construction of spinfoam amplitudes uses the state-integral model of PSL(2,C) Chern-Simons theory and the implementation of a simplicity constraint. The formulation has two key features: (1) spinfoam amplitudes are all finite, and (2) with suitable boundary data, the semiclassical asymptotics of the vertex amplitude has two oscillatory terms, with phase plus or minus the 4-dimensional Lorentzian Regge action with a cosmological constant for the constant curvature 4-simplex.

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How to cite

APA:

Han, M. (2021). Four-dimensional spinfoam quantum gravity with a cosmological constant: Finiteness and semiclassical limit. Physical Review D, 104(10). https://dx.doi.org/10.1103/PhysRevD.104.104035

MLA:

Han, Muxin. "Four-dimensional spinfoam quantum gravity with a cosmological constant: Finiteness and semiclassical limit." Physical Review D 104.10 (2021).

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