Time-ordered perturbation theory on non-commutative spacetime II: Unitarity

被引：65

作者：

Liao, Y ^{[1
]}

Sibold, K ^{[1
]}

机构：

[1] Univ Leipzig, Inst Theoret Phys, D-04109 Leipzig, Germany

来源：

EUROPEAN PHYSICAL JOURNAL C | 2002年 / 25卷 / 03期

关键词：

D O I：

10.1007/s10052-002-1018-7

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 examine the unitarity issue in the recently proposed time-ordered perturbation theory on noncommutative (NC) spacetime. We show that unitarity is preserved as long as the interaction Lagrangian is explicitly hermitian. We explain why it makes sense to distinguish the hermiticity of the Lagrangian from that of the action in perturbative NC field theory and how this requirement fits in this framework.

引用

页码：479 / 486

页数：8

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