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[en] At high temperature, every (d + 1)-dimensional theory can be reformulated as an effective theory in d dimensions. We test the numerical accuracy of this Dimensional Reduction for (3+1)-dimensional SU(2) by comparing perturbatively determined effective couplings with lattice results as the temperature is progressively lowered. We observe an increasing disagreement between numerical and perturbative values from T = 4Tc downwards
Journal
Nuclear Physics. B, Proceedings Supplements; ISSN 0920-5632; 
; CODEN NPBSE7; v. 106-107(1-3); p. 522-524
; CODEN NPBSE7; v. 106-107(1-3); p. 522-524