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arXiv 1503.08343hep-thgr-qc
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最小质量引力的Hamilton形式

Hamiltonian formalism of Minimal Massive Gravity

Davood Mahdavian Yekta

摘要:

本文在哈密顿形式下研究了三维最小质量引力(MMG)。通过定义正则规范生成元,导出了渐近守恒荷的正则表达式。具体地说,MMG渐近结构的构造需要引入合适的边界条件。以BTZ黑洞为例,应用该方法求解MMG场方程。相关的守恒电荷给出了BTZ黑洞的能量和角动量。我们还证明了改进的正则规范生成元的Poisson括号代数产生了一个渐近规范群,它包含两个可分离的维拉索罗代数。最后,利用边界共形场论的参数,由Cardy公式计算了黑洞的熵,结果与Smarr公式所得结果一致.

英文摘要:

We study the three-dimensional Minimal Massive Gravity (MMG) in the Hamiltonian formalism. Canonical expressions for the asymptotic conserved charges are derived by defining the canonical gauge generators. Specifically, the construction of asymptotic structure of MMG requires to introduce suitable boundary conditions. For instance, the application of this procedure is done for the BTZ black hole as a solution to the MMG field equations. The related conserved charges give the energy and angular momentum of the BTZ black hole. We also show that the Poisson bracket algebra of the improved canonical gauge generators produces an asymptotic gauge group which includes two separable versions of Virasoro algebras. Finally, we calculate the entropy of black hole from Cardy formula using the parameters of the boundary conformal field theory and show the result is consistent with the value obtained from Smarr one.

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