Space-time noncommutative field theories and unitarity

被引：414

作者：

Gomis, J ^{[1
]}

Mehen, T

机构：

[1] CALTECH, Dept Phys, Pasadena, CA 91125 USA

[2] Univ So Calif, Ctr Theoret Phys, CALTECH, Los Angeles, CA 90089 USA

来源：

NUCLEAR PHYSICS B | 2000年 / 591卷 / 1-2期

关键词：

D O I：

10.1016/S0550-3213(00)00525-3

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 study the perturbative unitarity of noncommutative scalar held theories. Field theories with space-time noncommutativity do not have a unitary S-matrix. Field theories with only space noncommutativity are perturbatively unitary. This can be understood from string theory, since space noncommutative field theories describe a low energy limit of string theory in a background magnetic field. On the other hand, there is no regime in which space-time noncommutative field theory is an appropriate description of string theory. Whenever space-time noncommutative field theory becomes relevant massive open string states cannot be neglected. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：265 / 276

页数：12

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