标题： 三维SU(N)+Higgs理论的格点-连续统关系 显示英文标题

标题： Lattice-continuum relations for 3d SU(N)+Higgs theories

摘要： 三维晶格研究最近引起了广泛关注，特别是在有限温度场论方面。 这些研究的一个组成部分是两圈晶格反项的微扰计算，这些反项在连续极限下是精确的。 我们将先前的此类结果扩展到具有基本和伴随表示Higgs场的SU(N)规范理论。 基本的SU(3)xSU(2)情形可能与MSSM中的电弱相变有关，而伴随情形则与大统一理论（GUT）相变以及高温相中的QCD有关。 我们还重新审视了标准的SU(2)xU(1)和U(1)理论。 显示英文摘要

摘要： 3d lattice studies have recently attracted a lot of attention, especially in connection with finite temperature field theories. One ingredient in these studies is a perturbative computation of the 2-loop lattice counterterms, which are exact in the continuum limit. We extend previous such results to SU(N) gauge theories with Higgs fields in the fundamental and adjoint representations. The fundamental SU(3)xSU(2) case might be relevant for the electroweak phase transition in the MSSM, and the adjoint case for the GUT phase transition and for QCD in the high temperature phase. We also revisit the standard SU(2)xU(1) and U(1) theories.