THE FINITE-TEMPERATURE PHASE-TRANSITION IN LATTICE SU(2) HIGGS THEORY AT WEAK COUPLINGS

被引：75

作者：

BUNK, B ^{[1
]}

ILGENFRITZ, EM ^{[1
]}

KRIPFGANZ, J ^{[1
]}

SCHILLER, A ^{[1
]}

机构：

[1] UNIV BIELEFELD, FAK PHYS, W-4800 BIELEFELD, GERMANY

来源：

NUCLEAR PHYSICS B | 1993年 / 403卷 / 1-2期

关键词：

D O I：

10.1016/0550-3213(93)90043-O

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

In the weak-coupling region, at beta = 8 and a lambda corresponding to an intermediate Higgs mass, the Higgs transition is studied on asymmetric thermal (N(sigma)3 X 2) lattices. A two-state signal is identified, indicating a first-order transition. Multihistogram and finite-size analysis are consistent with such a conclusion although the evidence is rather weak. The value of the Higgs condensate upsilon(T(crit)) indicates a weakly first-order transition, in qualitative accordance with partially resummed perturbation theory. On the other hand, the latent heat and the metastability temperature range deltaT/T(crit) exceed perturbative estimates by an order of magnitude. Higgs and vector boson masses are measured on symmetric lattices near the zero-temperature phase transition. The W-mass is found to be more sensitive to the lattice size than the Higgs mass. Masses and condensates are consistent with improved tree level relations within reasonable renormalized couplings.

引用

页码：453 / 474

页数：22

共 41 条

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