论文标题
宇宙隔离的紫外线灵敏度
Ultraviolet sensitivity of the cosmological sequester
论文作者
论文摘要
我们重新审视了Kaloper，Padilla和合作者的“隔离”建议，其中宇宙常数的幅度与包含标准模型颗粒的循环，使宇宙常数的幅度与大的贡献分离。我们回顾了文献中出现的模型的不同公式，并估计了特定类别的量子校正的重要性 - 将“刚性”标量与时空的“刚性”标量与红外属性之间的相互作用（例如其4卷和集成曲率）之间的相互作用。在不充分隔离重力环的制剂中，我们认为这些相互作用的敷料会导致完全隔离的进一步失败。我们估计效果的大小，发现它通常小于直接诱导的宇宙学术语，该术语由包含单个虚拟重力的环。同时，在最发达的场景配方中（刚性标量夫妻伴侣与高斯河网密度），这种敷料可以吸收到刚性磁场的重新上，因此是无害的。
We revisit the "sequester" proposal of Kaloper, Padilla and collaborators, in which the amplitude of the cosmological constant is decoupled from large contributions due to loops containing Standard Model particles. We review the different formulations of the model that have appeared in the literature, and estimate the importance of a particular class of quantum corrections-those that dress the interaction between the "rigid" scalars and infrared properties of the spacetime such as its 4-volume and integrated curvature. In formulations that do not adequately sequester graviton loops we argue that dressing of these interactions causes further failures of complete sequestration. We estimate the size of the effect and find that it is typically smaller than the cosmological term directly induced by loops containing a single virtual graviton. Meanwhile, in the most developed formulation of the scenario (where a rigid scalar couples to the Gauss-Bonnet density), this dressing can be absorbed into a rescaling of the rigid fields and is therefore harmless.
