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arXiv 1106.2131hep-thgr-qc
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Horava引力的Hamilton结构

Hamiltonian structure of Horava gravity

William Donnelly, Ted Jacobson

摘要:

导出了Horava引力的哈密顿形式。在封闭宇宙中,哈密顿量是规范对称性生成元的和,即保持叶理的超态,并在壳上消失。标量约束是第二类的,除了一个全局的,第一类的部分,产生时间reparametrizations。给出了一个简化的相空间公式,其中标量约束的局部部分作为3度规及其共轭动量的函数正式求解。在红外线极限中,标量约束在时间流逝的平方根中是线性的。对于渐近平坦的边界条件,哈密顿量是体积约束加上给出总能量的边界项的总和。这个能量表达式与爱因斯坦-以太理论的能量表达式相同,对于静态球对称解,爱因斯坦-以太理论的能量表达式是广义相对论中通常的Arnowitt-Deser-Misner能量和重新标度的牛顿常数。

英文摘要:

The Hamiltonian formulation of Horava gravity is derived. In a closed universe the Hamiltonian is a sum of generators of gauge symmetries, the foliation-preserving diffeomorphisms, and vanishes on shell. The scalar constraint is second class, except for a global, first-class part that generates time reparametrizations. A reduced phase space formulation is given in which the local part of the scalar constraint is solved formally for the lapse as a function of the 3 metric and its conjugate momentum. In the infrared limit the scalar constraint is linear in the square root of the lapse. For asymptotically flat boundary conditions the Hamiltonian is a sum of bulk constraints plus a boundary term that gives the total energy. This energy expression is identical to the one for Einstein-aether theory which, for static spherically symmetric solutions, is the usual Arnowitt-Deser-Misner energy of general relativity with a rescaled Newton constant.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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