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Symmetry restoration and quantum Mpemba effects in chaotic andlocalization sy...
Quantum Gases 2024
Stories of Fermions in an Optical Box
Contractive Unitary and Classical Shadow Tomography
报告题目:
Gravitational back-reaction is the Holographic Dual of Magic
 报告人:
成功 研究员
Virginia Tech研究员
报告时间:
2024-04-25 15:00
报告地点:
清华大学高等研究院(科学馆)104报告厅
主办单位:
清华大学高等研究院
  简介:

We study interplay between magic and entanglement in quantum ?many-body systems. We show that non-local magic which is supported by ?the quantum correlations is lower bounded by the flatness of ?entanglement spectrum and upper bounded by the amount of entanglement ?in the system. We then argue that a smoothed version of non-local ?magic bounds the hardness of classical simulations for incompressible ?states. In conformal field theories, we conjecture that the non-local ?magic should scale linearly with entanglement entropy but sublinearly ?when an approximation of the state is allowed. We support the ?conjectures using both analytical arguments based on unitary ?distillation and numerical data from an Ising CFT. If the CFT has a ?holographic dual, then we prove that the non-local magic vanishes if ?and only if there is no gravitational back-reaction. Furthermore, we ?show that non-local magic approximately equals the rate of change of ?minimal surface area in response to the change of the tension of ?cosmic branes in the bulk.

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