Effective Lagrangians and universality classes of nonlinear bigravity
Effective Lagrangians and universality classes of nonlinear bigravity
复制标题
有效拉格朗日量和非线性重重力的普遍性类
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
I. Kogan
中科院分区：
文献类型：
--
作者：
T. Damour;I. Kogan
我们讨论了多重重力的完全非线性表述。引入了描述多重引力最简单形式--重力性的有效拉格朗日普适类的概念。我们证明了非线性多重引力理论可以在几种不同的物理背景下自然产生：薄膜构型、某些Kaluza-Klein约化和一些非对易几何模型。简要讨论了多重引力的形式和唯象方面(包括与质量引力子的线性化理论有关的问题)。
We discuss the fully non-linear formulation of multigravity. The concept of universality classes of effective Lagrangians describing bigravity, which is the simplest form of multigravity, is introduced. We show that non-linear multigravity theories can naturally arise in several different physical contexts: brane configurations, certain Kaluza-Klein reductions and some non-commutative geometry models. The formal and phenomenological aspects of multigravity (including the problems linked to the linearized theory of massive gravitons) are briefly discussed.