Covariant constraints for generic massive gravity and analysis of its characteristics
Covariant constraints for generic massive gravity and analysis of its characteristics
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DOI：
10.1103/physrevd.90.104043
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发表时间：
2014-08
影响因子：
5
通讯作者：
S. Deser;M. Sandora;A. Waldron;G. Zahariade
中科院分区：
文献类型：
--
作者：
S. Deser;M. Sandora;A. Waldron;G. Zahariade
我们进行了协变约束分析的大规模重力有效的整个参数空间，表明该模型一般传播5自由度，这也是验证了一个新的和流线型的哈密顿描述。约束的协变表达式允许计算模型的焦散。虽然新的特征，如动力学黎曼张量出现在特征矩阵中，该模型仍然表现出在早期工作中发现的病理学：超发光和可能的因果关系。
We perform a covariant constraint analysis of massive gravity valid for its entire parameter space, demonstrating that the model generically propagates 5 degrees of freedom; this is also verified by a new and streamlined Hamiltonian description. The constraint’s covariant expression permits computation of the model’s caustics. Although new features such as the dynamical Riemann tensor appear in the characteristic matrix, the model still exhibits the pathologies uncovered in earlier work: superluminality and likely acausalities.