Anomalous coupling of scalars to gauge fields

被引：40
|
作者：
Brax, Philippe [2 ]
Burrage, Clare [3 ,4 ]
Davis, Anne-Christine [5 ]
Seery, David [1 ]
Weltman, Amanda [6 ]
机构：
[1] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England
[2] CNRS, Inst Phys Theor, CEA, IPhT,URA 2306, F-91191 Gif Sur Yvette, France
[3] Univ Geneva, Dept Phys Theor, CH-1211 Geneva, Switzerland
[4] DESY, Theory Grp, D-22603 Hamburg, Germany
[5] Ctr Math Sci, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England
[6] Univ Cape Town, Dept Math & Appl Math, Astron Cosmol & Grav Ctr, ZA-7700 Rondebosch, South Africa
来源：
PHYSICS LETTERS B | 2011年 / 699卷 / 1-2期
基金：
英国科学技术设施理事会;
关键词：
Dark energy; Modified gravity; Anomalies in quantum field theory;
D O I：
10.1016/j.physletb.2011.03.047
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the transformation properties of a scalar-tensor theory, coupled to fermions, under the Weyl rescaling associated with a transition from the Jordan to the Einstein frame. We give a simple derivation of the corresponding modification to the gauge couplings. After changing frames, this gives rise to a direct coupling between the scalar and the gauge fields. (C) 2011 Elsevier B.V. All rights reserved.
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页码：5 / 9
页数：5
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