13 papers
High Temperature 3D QCD: Dimensional Reduction at Work
P. Bialas, A. Morel, B. Petersson +2
We investigate the three-dimensional SU(3) gauge theory at finite temperature in the framework of dimensional reduction. The large scale properties of this theory are expected to b…
The Weak-Coupling Limit of Simplicial Quantum Gravity
G. Thorleifsson, P. Bialas, B. Petersson
In the weak-coupling limit, kappa_0 going to infinity, the partition function of simplicial quantum gravity is dominated by an ensemble of triangulations with the ratio N_0/N_D clo…
The Strong-Coupling Expansion in Simplicial Quantum Gravity
S. Bilke, Z. Burda, A. Krzywicki +4
We construct the strong-coupling series in 4d simplicial quantum gravity up to volume 38. It is used to calculate estimates for the string susceptibility exponent gamma for various…
4d Simplicial Quantum Gravity: Matter Fields and the Corresponding Effective Action
S. Bilke, Z. Burda, A. Krzywicki +3
Four-dimensional simplicial quantum gravity is modified either by coupling it to U(1) gauge fields or by introducing a measure weighted by the orders of the triangles. Strong coupl…
Beyond the c=1 Barrier in Two-Dimensional Quantum Gravity
G. Thorleifsson, B. Petersson
We introduce a simple model of touching random surfaces, by adding a chemical potential rho for ``minimal necks'', and study this model numerically coupled to a Gaussian model in d…
Universality of hypercubic random surfaces
S. Bilke, Z. Burda, B. Petersson
We study universality properties of the Weingarten hyper-cubic random surfaces. Since a long time ago the model with a local restriction forbidding surface self-bendings has been t…