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arXiv 1202.5935hep-th
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关于弦论中的Lifshitz标度和超标度破坏

On Lifshitz scaling and hyperscaling violation in string theory

K. Narayan

摘要:

我们探索弦/M理论的全息理论与Lifshitz标度指数$z$和超标度违反指数$θ$的建设,发现一系列的$z,θ$值。其中一些是由于对出现在极值D3-、M2-和M5-膜理论的近视界几何中的$AdS$时空的某些零变形进行降维而产生的有效度规。特别地,$AdS_5$解决方案在$d=2$(边界)空间维度中产生$θ=1$。其他解决方案出现的IIA D2-和D4-膜的解决方案与适当的零变形,我们讨论这些系统的相结构。

英文摘要:

We explore string/M-theory constructions of holographic theories with Lifshitz scaling exponent $z$ and hyperscaling violation exponent $θ$, finding a range of $z,θ$-values. Some of these arise as effective metrics from dimensional reduction of certain kinds of null deformations of $AdS$ spacetimes appearing in the near horizon geometries of extremal D3-, M2- and M5-brane theories. The $AdS_5$ solution in particular gives rise to $θ=1$ in $d=2$ (boundary) space dimensions. Other solutions arise as the IIA D2- and D4-brane solutions with appropriate null deformations, and we discuss the phase structure of these systems.

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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