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arXiv 1803.04718hep-th
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AdS $_3$ / CFT $_2$中非均匀猝灭的纠缠熵

Entanglement entropy in inhomogeneous quenches in AdS$_3$/CFT$_2$

Tim De Jonckheere, Jonathan Lindgren

摘要:

在AdS $_3$ /CFT $_2$中计算了非均匀全息猝灭的纠缠熵和微分熵。淬灭是任意不均匀的,并由一个下落壳的无质量非旋转物质的最终状态是不是一个静态的黑洞,而是一个黑洞与时间相关的应力-能量张量模式的对偶模型。我们研究了区间的纠缠熵和区间族的微分熵,当非均匀性具有微扰振幅时,我们给出了解析解,而当非微扰振幅时,我们给出了数值解。虽然我们在原则上能够研究这些数量的任何不均匀性,我们讨论两个具体的例子:振荡淬火和双局部淬火。这两种情况都显示出朝向稳定状态的饱和,但不完全热化。根据间隔的位置和大小,纠缠熵显示出各种有趣的现象,如平台阶段,颠簸,和不连续性,在其一阶导数相对于时间。

英文摘要:

We compute entanglement entropy and differential entropy in inhomogeneous holographic quenches in AdS$_3$/CFT$_2$. The quenches are arbitrarily inhomogeneous and modeled by an infalling shell of massless non-rotating matter where the final state is not dual to a static black hole but rather to a black hole with time-dependent stress-energy tensor modes. We study the entanglement entropy of an interval and differential entropy of a family of intervals analytically when the inhomogeneities have a perturbative amplitude and numerically for non-perturbative inhomogeneities. While we are in principle able to study these quantities for any inhomogeneities, we discuss two concrete examples: an oscillatory quench and a bilocal quench. Both cases display saturation towards a steady state but do not fully thermalize. Depending on the location and size of the interval, the entanglement entropy displays a variety of interesting phenomena such as plateau phases, bumps, and discontinuities in its first derivative with respect to time.

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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