Phase diagram of Regge quantum gravity coupled to SU(2) gauge theory

Journal Article · Sat Nov 30 23:00:00 EST 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.54.7421· OSTI ID:399909

Berg, B A ^[1]; Beirl, W; Krishnan, B; Markum, H; Riedler, J ^[2]

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1. Department of Physics and Supercomputer Computations Research Institute, Florida State University, Tallahassee, Florida 32306 (United States)
2. Institut fuer Kernphysik, Technische Universitaet Wien, A-1040 Vienna (Austria)

We analyze Regge quantum gravity coupled to SU(2) gauge theory on 4{sup 3}{times}2, 6{sup 3}{times}4, and 8{sup 3}{times}4 simplicial Euclidean lattices. It turns out that the window of the well-defined phase of the gravity sector where geometrical expectation values are stable extends to negative gravitational couplings as well as to gauge couplings across the deconfinement phase transition. We study the string tension from Polyakov loops, compare with the {beta} function of pure gauge theory, and conclude that a physical limit through scaling is possible. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Florida State University
• DOE Contract Number: FG05-85ER25000; FG05-87ER40319
• OSTI ID: 399909
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 12 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CONFINEMENT
COUPLING
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
QUANTUM GRAVITY
SCALING
STRING MODELS
SU-2 GROUPS
UNIFIED GAUGE MODELS