Phase Transition of 4D Simplicial Quantum Gravity with U(1) Gauge Field

Abstract

The phase transition of 4D simplicial quantum gravity coupled to U(1) gauge fields is studied using Monte-Carlo simulations. The phase transition of the dynamical triangulation model with vector field ($N_V=1$) is smooth as compared with the pure gravity($N_V=0$). The node susceptibility ($\chi$) is studied in the finite size scaling method. At the critical point, the node distribution has a sharp peak in contrast to the double peak in the pure gravity. From the numerical results, we expect that 4D simplicial quantum gravity with U(1) vector fields has higher order phase transition than 1st order, which means the possibility to take the continuum limit at the critical point.

3 pages, latex, 3 eps figures, uses espcrc2.sty. Talk presented at LATTICE99(gravity)

Cited by in corpus (4)

• Phase Structure of Four-dimensional Simplicial Quantum Gravity with a U(1) Gauge Field
• A Candidate for Renormalizable and Diffeomorphism Invariant 4D Quantum Theory of Gravity
• On The BRST Formulation of Diffeomorphism Invariant 4D Quantum Gravity
• Note on Quantum Diffeomorphism Invariance, Physical States and Unitarity