Distance between Quantum States and Gauge-Gravity Duality.
Distance between Quantum States and Gauge-Gravity Duality.
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DOI：
10.1103/physrevlett.115.261602
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发表时间：
2015-07
影响因子：
8.6
通讯作者：
Masamichi Miyaji;Tokiro Numasawa;Noburo Shiba;T. Takayanagi;Kento Watanabe
中科院分区：
文献类型：
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作者：
Masamichi Miyaji;Tokiro Numasawa;Noburo Shiba;T. Takayanagi;Kento Watanabe
本文研究了共形场论中的量子信息度规（或称保真度磁化率）对主算符的微扰。我们认为，它的引力对偶近似地由反德西特时空中的最大时间片的体积给出，当微扰是精确的边际。我们用几个例子来证实我们的主张。
We study a quantum information metric (or fidelity susceptibility) in conformal field theories with respect to a small perturbation by a primary operator. We argue that its gravity dual is approximately given by a volume of maximal time slice in an anti-de Sitter spacetime when the perturbation is exactly marginal. We confirm our claim in several examples.