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arXiv 0908.3490hep-thgr-qc
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笼中黑洞热力学:电荷、极值和有限尺寸效应

Caged black hole thermodynamics: Charge, the extremal limit, and finite size effects

James B. Gilmore, Andreas Ross, Michael Smolkin

摘要:

我们将紧致小黑洞热力学的有效场论处理推广到带电黑洞的情形。相关热力学量在参数λ \sim(r_0/L)^(d-3)中计算到二阶。我们讨论了如何添加电荷的笼中黑洞可能会延迟相变到黑弦。在极值极限下,我们构造了一个精确的黑洞解,作为对我们微扰结果的检验。有限尺寸效应也通过高阶算子包含在世界线作用量中。我们计算了在这些算符存在的情况下热力学量是如何被修正的,并表明它们进入λ^2阶以上,就像在不带电的情况下一样。最后,我们利用精确解将有限大小算子的Wilson系数限制在极值极限内。

英文摘要:

We extend the effective field theory treatment of the thermodynamics of small compactified black holes to the case of charged black holes. The relevant thermodynamic quantities are computed to second order in the parameter λ\sim(r_0/L)^(d-3). We discuss how the addition of charge to a caged black hole may delay the phase transition to a black string. In the extremal limit, we construct an exact black hole solution which serves as a check for our perturbative results. Finite size effects are also included through higher order operators in the worldline action. We calculate how the thermodynamic quantities are modified in the presence of these operators, and show they enter beyond order λ^2 as in the uncharged case. Finally, we use the exact solution to constrain the Wilson coefficients of the finite size operators in the extremal limit.

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