Optimization of renormalization group flow

被引：53

作者：

Liao, SB ^{[1
]}

Polonyi, J

Strickland, M

机构：

[1] Univ Strasbourg, Theoret Phys Lab, Strasbourg, France

[2] Natl Chung Cheng Univ, Dept Phys, Chiayi, Taiwan

[3] Eotvos Lorand Univ, Dept Atom Phys, Budapest, Hungary

[4] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

来源：

NUCLEAR PHYSICS B | 2000年 / 567卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0550-3213(99)00496-4

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：

Renormalization group flow equations for scalar lambda Phi(4) are generated using three classes of smooth smearing functions. Numerical results for the critical exponent nu in three dimensions are calculated by means of a truncated series expansion of the blocked potential. We demonstrate how the convergence of nu as a function of the order of truncation can be improved through a fine tuning of the smoothness of the smearing functions. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：493 / 514

页数：22

共 42 条

[11] Polchinski equation, reparameterization invariance and the derivative expansion [J].