THE ABSENCE OF CUTOFF EFFECTS FOR THE FIXED-POINT ACTION IN ONE-LOOP PERTURBATION-THEORY

被引：27

作者：

FARCHIONI, F

HASENFRATZ, P

NIEDERMAYER, F

PAPA, A

机构：

[1] IST NAZL FIS NUCL, I-56126 PISA, ITALY

[2] UNIV BERN, INST THEORET PHYS, CH-3012 BERN, SWITZERLAND

来源：

NUCLEAR PHYSICS B | 1995年 / 454卷 / 03期

关键词：

D O I：

10.1016/0550-3213(95)00460-A

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 order to support the formal renormalization group arguments that the fixed-point action of an asymptotically free model gives cut-off independent physical predictions in one-loop perturbation theory, we calculate the finite-volume mass gap m(L) in the non-linear sigma-model. No cut-off effect of the type g(4) (a/L)(n) is seen for any n. The results are compared with those of the standard and tree level improved Symanzik actions.

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页码：638 / 644

页数：7

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