arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1810.08910hep-phhep-th
收藏

真空能量与微量异常

Vacuum energy and trace anomaly

Taekoon Lee

摘要:

关于场论中的迹反常,除了通常的β函数依赖项之外,非零真空能量也破坏了标度对称性,需要迹反常中的单位算子。这个附加项在量子色动力学(QCD)中也是必要的,以消除胶子凝聚体中固有的模糊性。由于胶子凝聚效应与微扰对真空能量的贡献不可分离,因此不可能将胶子凝聚效应与宇宙学常数分离开来。

英文摘要:

Concerning the trace anomaly in field theory a nonvanishing vacuum energy breaks the scale symmetry as well, in addition to the usual beta function dependent term, requiring a unit operator in the trace anomaly. This additional term is also necessary in quantum chromodynamics (QCD) to cancel the inherent ambiguity in the gluon condensate. The inseparability of the gluon condensate effect from the perturbative contribution to the vacuum energy renders it impossible to isolate the gluon condensate effect on the cosmological constant.

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。

↑