arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1306.3344hep-thcond-mat.str-el
收藏

有限温度和自上而下模型下来自AdS的Lifshitz

Lifshitz from AdS at finite temperature and top down models

Yegor Korovin, Kostas Skenderis, Marika Taylor

摘要:

我们在Einstein-Proca模型中解析地构造了一个动力学指数为z=1+ ε ^2的渐近Lifshitz黑膜,其中ε是一个小参数。在以前的工作中,我们证明了全息对偶QFT是CFT通过矢量算子的时间分量的变形,并且参数λ是相应的变形参数。在黑膜背景中,该算子另外获得真空期望值。我们解释如何QFT沃德恒等式与Lifshitz不变性导致守恒质量和计算分析表明,他们确实采取的形式隐含的Lifshitz不变性的热力学量。在本文的第二部分中,我们考虑自上而下的Lifshitz模型的动力学指数接近1,并表明,他们可以理解的共形场论的矢量变形。然而,在所有已知的情况下,无论是共形场论和它的Lifshitz变形的模式,违反Breitenlohner-Freedman界限。

英文摘要:

We construct analytically an asymptotically Lifshitz black brane with dynamical exponent z=1+epsilon^2 in an Einstein-Proca model, where epsilon is a small parameter. In previous work we showed that the holographic dual QFT is a deformation of a CFT by the time component of a vector operator and the parameter epsilon is the corresponding deformation parameter. In the black brane background this operator additionally acquires a vacuum expectation value. We explain how the QFT Ward identity associated with Lifshitz invariance leads to a conserved mass and compute analytically the thermodynamic quantities showing that they indeed take the form implied by Lifshitz invariance. In the second part of the paper we consider top down Lifshitz models with dynamical exponent close to one and show that they can be understood in terms of vector deformations of conformal field theories. However, in all known cases, both the conformal field theory and its Lifshitz deformations have modes that violate the Breitenlohner-Freedman bound.

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。

↑