Noncommutative scalar field coupled to gravity

被引：33

作者：

Bertolami, O ^{[1
]}

Guisado, L ^{[1
]}

机构：

[1] Univ Tecn Lisboa, Dept Fis, Inst Super Tecn, P-1049001 Lisbon, Portugal

来源：

PHYSICAL REVIEW D | 2003年 / 67卷 / 02期

关键词：

D O I：

10.1103/PhysRevD.67.025001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A model for a noncommutative scalar field coupled to gravity is proposed via an extension of the Moyal product. It is shown that there are solutions compatible with homogeneity and isotropy to first nontrivial order in the perturbation of the star product, with the gravity sector described by a flat Robertson-Walker metric. We show that in the slow-roll regime of a typical chaotic inflationary scenario, noncommutativity has negligible impact.

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