论文标题
单模型的重力和量规/重力二元性
Unimodular gravity and the gauge/gravity duality
论文作者
论文摘要
可以制定单模型的重力，以使横向差异形态和WEYL转化是该理论的对称性。为了表达非模块性重力，我们可以在领先的近似值和欧几里得ADS背景中贡献对壳上经典重力作用的两点和三点$ h_ {μν} $贡献。我们得出的结论是，这些贡献与由于IR发散的接触条款而使用的一般相对论获得的贡献不一致。这些IR发散项的减法产生的IR有限结果既是单模型的重力和一般相对论。量规/重力二元性方面的单型重力与一般相对性之间的等效性以非微不足道的方式出现。
Unimodular gravity can be formulated so that transverse diffeomorphisms and Weyl transformations are symmetries of the theory. For this formulation of unimodular gravity, we work out the two-point and three-point $h_{μν}$ contributions to the on-shell classical gravity action in the leading approximation and for an Euclidean AdS background. We conclude that these contributions do not agree with those obtained by using General Relativity due to IR divergent contact terms. The subtraction of these IR divergent terms yields the same IR finite result for both unimodular gravity and General Relativity. Equivalence between unimodular gravity and General Relativity with regard to the gauge/gravity duality thus emerges in a non trivial way.
