论文标题

变形SYK模型的重量法化组流量

Renormalisation Group Flows of Deformed SYK Models

论文作者

Anninos, Dionysios, Galante, Damián A., Sheorey, Sameer U.

论文摘要

我们探讨了SYK模型的计算障碍变形。变形的理论用两个Syk Hamiltonians的总和,具有不同的数字,$ Q $和$ \ tilde {q} $的互动费米子的总和。在使用分析和数值工具的大$ n $限制中,我们计算有限温度相关功能和热力学数量。我们在大$ Q $限制中确定了一个新颖的可解析模型。我们发现,在某些情况下,强耦合红外相中的热RG流动表现出两个线性温度熵的区域,我们用schwarzian的作用来解释。使用保形扰动理论,我们计算出领先的相关校正远离中间近似固定点。讨论了两个时空维度的全息空间,这些尺寸重现了微物理理论的热力学。这些是流量的几何形状,它们在两个欧几里得近乎近距离之间插值,$ _2 $ spaceTimes具有不同的半径。与深度内部的ADS $ _2 $区域相对应的Schwarzian软模式完全驻留在几何体制内。

We explore computationally tractable deformations of the SYK model. The deformed theories are described by the sum of two SYK Hamiltonians with differing numbers, $q$ and $\tilde{q}$, of interacting fermions. In the large $N$ limit, employing analytic and numerical tools, we compute finite temperature correlation functions and thermodynamic quantities. We identify a novel analytically solvable model in the large $q$ limit. We find that, under certain circumstances, the thermal RG flow in the strongly coupled infrared phase exhibits two regions of linear-in-temperature entropy, which we interpret in terms of Schwarzian actions. Using conformal perturbation theory we compute the leading relevant correction away from the intermediate near-conformal fixed point. Holographic spacetimes in two spacetime dimensions that reproduce the thermodynamics of the microphysical theory are discussed. These are flow geometries that interpolate between two Euclidean near-AdS$_2$ spacetimes with different radii. The Schwarzian soft mode corresponding to the AdS$_2$ region in the deep interior resides entirely within the geometric regime.

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