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题名: Gravitational contributions to gauge Green
作者: Tang, Y ;  Wu, YL
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2011
期号: 11, 页码:73
关键词: ONE-LOOP DIVERGENCES ;  DEWITT EFFECTIVE ACTION ;  YANG-MILLS FIELD ;  QUANTUM-GRAVITY ;  RENORMALIZATION ;  REGULARIZATION ;  SYSTEM ;  NONRENORMALIZABILITY ;  QFTS
学科分类: Physics
通讯作者: Tang, Y (reprint author), Chinese Acad Sci, KITPC, SKLTP, Inst Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Tang, Yong; Wu, Yue-Liang] Chinese Acad Sci, KITPC, SKLTP, Inst Theoret Phys, Beijing 100190, Peoples R China; [Tang, Yong] Natl Tsing Hua Univ, Natl Ctr Theoret Sci, Div Phys, Hsinchu, Taiwan
英文摘要: We perform an explicit one-loop calculation for the gravitational contributions to the two-, three-and four-point gauge Green's functions with paying attention to the quadratic divergences. It is shown for the first time in the diagrammatic calculation that the Slavnov-Taylor identities are preserved even if the quantum graviton effects are included at one-loop level, such a conclusion is independent of the choice of regularization schemes. We also present a regularization scheme independent calculation based on the gauge condition independent background field framework of Vilkovisky-DeWitt's effective action with focusing on both the quadratic divergence and quartic divergence that is not discussed before. With the harmonic gauge condition, the results computed by using the traditional background field method can consistently be recovered from the Vilkovisky-DeWitt's effective action approach by simply taking a limiting case, and are found to be the same as the ones yielded by the diagrammatic calculation. As a consequence, in all the calculations, the symmetry-preserving and divergent-behavior-preserving loop regularization method can consistently lead to a nontrivial gravitational contribution to the gauge coupling constant with an asymptotic free power-law running at one loop near the Planck scale.
资助者: National Science Foundation of China (NSFC) [10821504, 10975170]; Chinese Academy of Sciences
收录类别: SCI
原文出处: 查看原文
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14236
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Tang, Y,Wu, YL. Gravitational contributions to gauge Green[J]. JOURNAL OF HIGH ENERGY PHYSICS,2011(11):73.
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