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Prog. Theor. Phys. Vol. 71 No. 5 (1984) pp. 1026-1035
Analytic Property of Lattice Theories with Improved Action
Hiroaki Arisue and
Toshiaki Fujiwara*
Research Institute for Fundamental Physics, Kyoto University, Kyoto 606
*Research Institute for Mathematical Science, Kyoto University, Kyoto 606
(Received December 12, 1983)
Abstract:
Analytic property of the lattice spin or gauge system with improved action is studied. The existence of two regions is shown. In one of the regions the two-point function or the expectation value of the Wilson loop decays with oscillation. In the other region it decays exponentially. The boundary of the two regions is branch point. Systematic procedure to obtain the strong coupling expansion series for the mass gap or the string tension is also shown.
URL :
http://ptp.ipap.jp/link?PTP/71/1026/
DOI : 10.1143/PTP.71.1026
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