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Anders Irbäck. Photo.

Anders Irbäck

Professor

Anders Irbäck. Photo.

The effective string and SU(2) lattice MC data

Author

  • M. Flensburg
  • A. Irbäck
  • C. Peterson

Summary, in English

We present high statistics MC calculations of the static potential in three-dimensional SU(2) for a wide range of β values on a 243 lattice. The deviations from area law are unambiguously demonstrated by use of 2nd lattice R derivative. After a clear crossover at β=4.5 the data show signs of an effective string roughening up to β=6.5, while scaling is not strictly obeyed in this interval. Pure fermionic strings do not provide better fits. The effect of regularization prescription on the effective string model up to two-loop correction is discussed and is found to be small. We also make a comparative study of existing data on Z(2) and SU(3) together with new data on fourdimensional SU(2) presented here. It is pointed out that standard variance reduction methods as applied especially to Wilson lines are plagued by severe long range auto-correlations, whereas larger Wilson loops are less affected.

Department/s

  • Department of Astronomy and Theoretical Physics

Publishing year

1987-12

Language

English

Pages

629-637

Publication/Series

Zeitschrift für Physik C Particles and Fields

Volume

36

Issue

4

Document type

Journal article

Publisher

Springer

Topic

  • Geophysics
  • Other Physics Topics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0170-9739