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arXiv 1301.0632hep-thgr-qc
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微扰理论之外的量子引力中的Faddeev-Popov鬼

Faddeev-Popov ghosts in quantum gravity beyond perturbation theory

Astrid Eichhorn

摘要:

研究了渐近安全量子引力的Faddeev-Popov鬼扇区,它在紫外光下变为非微扰。我们指出,非零的物质-鬼耦合和高阶鬼自相互作用存在于引力耦合的非高斯固定点,即,在紫外线下。因此,在这个非微扰紫外完成鬼部门不保持一个简单的Faddeev-Popov行列式的结构。我们讨论了引力场中新的鬼耦合对重整化群流的影响,紫外线完成的形式,以及相关的耦合,理论的自由参数。

英文摘要:

We study the Faddeev-Popov ghost sector of asymptotically safe quantum gravity, which becomes non-perturbative in the ultraviolet. We point out that nonzero matter-ghost couplings and higher-order ghost self-interactions exist at a non-Gaussian fixed point for the gravitational couplings, i.e., in the ultraviolet. Thus the ghost sector in this non-perturbative ultraviolet completion does not keep the structure of a simple Faddeev-Popov determinant. We discuss implications of the new ghost couplings for the Renormalization Group flow in gravity, the form of the ultraviolet completion, and the relevant couplings, i.e., free parameters, of the theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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