论文标题

全息量子疤痕

Holographic Quantum Scars

论文作者

Liska, Diego, Gritsev, Vladimir, Vleeshouwers, Ward, Minář, Jiří

论文摘要

我们在全息图中讨论了量子多体疤痕的结构。我们考虑二维形成的保形场理论,并使用它们的动力对称性,自然地通过Virasoro代数实现,以构建疤痕状态。通过研究其Loschmidt幅度,我们评估了状态的周期性。几何解释使我们能够计算这些疤痕状态的应力张量和纠缠熵的期望值。我们表明,它们的全息双重二元与空广告的差异性有关,即使是在黑洞阈值上方的能量也是如此。我们还证明,疤痕状态中的期望值通常是非热的,并且它们的纠缠熵以能量作为$ \ log(e)$增长,与典型(bulk)状态的$ \ sqrt {e} $相反。此外,我们确定了与疤痕状态具有无限能量的极限相关的CFT平面上的固定点。

We discuss a construction of quantum many-body scars in the context of holography. We consider two-dimensional conformal field theories and use their dynamical symmetries, naturally realized through the Virasoro algebra, to construct scarred states. By studying their Loschmidt amplitude, we evaluate the states' periodic properties. A geometrical interpretation allows us to compute the expectation value of the stress tensor and entanglement entropy of these scarred states. We show that their holographic dual is related by a diffeomorphism to empty AdS, even for energies above the black hole threshold. We also demonstrate that expectation values in the scarred states are generally non-thermal and that their entanglement entropy grows with the energy as $\log(E)$ in contrast to $\sqrt{E}$ for the typical (bulk) states. Furthermore, we identify fixed points on the CFT plane associated with divergent or vanishing entanglement entropy in the limit where the scarred states have infinite energy.

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