SU(2) Lattice Gauge Theory with Logarithmic Action: Scaling and Universality

Details SU(2) Lattice Gauge Theory with Logarithmic Action: Scaling and Universality SU(2) Lattice Gauge Theory with Logarithmic Action: Scaling and Universality

1995-02-15

arxiv.org/abs/hep-lat/9502009v1

Nucl.Phys.B451:469-483,1995

Physics

High Energy Physics

High Energy Physics - Lattice

19 pages. Self-unwrapping compressed postscript file

Scientific paper

10.1016/0550-3213(95)00347-U

We investigate a version of SU(2) lattice gauge theory with a logarithmic action. The model is found to exhibit confinement, contrary to previous claims in the literature. Comparing ratios of physical quantities, like $\sqrt{\sigma}/T_c$, we find that the model belongs to the same universality class as the standard SU(2) lattice gauge theory with Wilson action. Like the positive plaquette model, the model with logarithmic action has a monotonic $\beta$-function, without the famous dip exhibited by the Wilson action. Short distance dislocations affecting the definition of topology are slightly more suppressed than for the positive plaquette model.

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