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String breaking with Wilson loops?

✍ Scribed by Slavo Kratochvila; Philippe de Forcrand

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
268 KB
Volume
119
Category
Article
ISSN
0920-5632

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✦ Synopsis

A convincing, uncontroversial observation of string breaking, when the static potential is extracted from Wilson loops only, is still missing. This failure can be understood if the overlap of the Wilson loop with the broken string is exponentially small. In that case, the broken string ground state will only be seen if the Wilson loop is long enough. Our preliminary results show string breaking in the context of the 3d SU(2) adjoint static potential, using the Liischer-Weisz exponential variance reduction approach. As a by-product, we measure the fundamental SU(2) static potential with improved accuracy and see clear deviations from Casimir scaling.

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Nature of the physical problem The program calculates Wilson loops, their correlations and the Catalogue number: ACFJ string tension for U(1) lattice gauge theory. These are useful observables [11 for studying the phase structure of U(1) lattice Program available from: CPC Program Library, Queen's U