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

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

1999-08-27

arxiv.org/abs/hep-lat/9908048v2

Nucl.Phys.Proc.Suppl. 83 (2000) 751-753

Physics

High Energy Physics

High Energy Physics - Lattice

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

Scientific paper

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.

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