The two-phase issue in the O(n) non-linear sigma-model: A Monte Carlo study

被引：7

作者：

Alles, B ^{[1
]}

Buonanno, A ^{[1
]}

Cella, G ^{[1
]}

机构：

[1] IST NAZL FIS NUCL, I-56100 PISA, ITALY

来源：

NUCLEAR PHYSICS B | 1997年

关键词：

D O I：

10.1016/S0920-5632(96)00751-7

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：

We have performed a high statistics Monte Carlo simulation to investigate whether the two-dimensional O(n) non-linear sigma models are asymptotically free or they show a Kosterlitz-Thouless-like phase transition. We have calculated the mass gap and the magnetic susceptibility in the O(8) model with standard action and the O(3) model with Symanzik action. Our results for O(8) support the asymptotic freedom scenario.

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收藏

页码：677 / 679

页数：3

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