论文标题
量子问题校正和宇宙常数运行的非局部性
Nonlocality of quantum matter corrections and cosmological constant running
论文作者
论文摘要
对重力作用的半经典作用包括各种术语，零，两个和四个衍生物以及这些术语的非本地形式。在特定的度量背景或特定规格修复的情况下，对其中一些术语的贡献可能会与其他术语相混淆。我们对最近的作品进行了批判性分析，其中张量结构和重力作用中的衍生物数量未正确考虑。考虑到这些相关方面，我们表明，尽管由于巨大或无质量标量的量子波动以及费米昂和矢量场的某些贡献可能归因于宇宙学常数的“运行”，但实际上它们与动作的第四个衍生术语相对应。
Semiclassical contributions to the gravitational action include various terms with zero, two, and four derivatives of the metric as well as nonlocal form factors for these terms. Contributions to some of these terms could be confused with others on a specific metric background or for a particular gauge fixing. We present a critical analysis of the recent works where the tensor structure and the number of derivatives in the action of gravity were not properly taken into account. Taking these relevant aspects into account, we show that although some contributions owing to the quantum fluctuations of massive or massless scalar as well as fermion and vector fields may be attributed to the "running" of the cosmological constant, in reality they correspond to the fourth derivative terms of the action.
