On-shell improved lattice gauge theories |
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| Authors: | M. Lüscher P. Weisz |
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| Affiliation: | (1) Deutsches Elektronen-Synchrotron DESY, D-2000 Hamburg, Federal Republic of Germany;(2) II. Institut für Theoretische Physik der Universität Hamburg, D-2000 Hamburg 50, Federal Republic of Germany |
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| Abstract: | ![]()
By means of a spectrum conserving transformation, we show that one of the 3 coefficients in Symanzik's improved action can be chosen freely, if only spectral quantities (masses of stable particles, heavy quark potential etc.) are to be improved. In perturbation theory, the other 2 coefficients are however completely determined and their values are obtained to lowest order.Heisenberg foundation fellow |
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