arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2006.10754hep-thgr-qcquant-ph
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反映熵的岛屿

Islands for Reflected Entropy

Venkatesa Chandrasekaran, Masamichi Miyaji, Pratik Rath

摘要:

最近的工作表明,在计算耦合到半经典引力区域的QFT态的纠缠熵时,需要包括纠缠岛的贡献。我们提出了一个新的公式反射熵,包括额外的贡献,从这样的岛屿。我们从引力路径积分中推导出这个公式,通过寻找包含广义副本虫洞的附加鞍点。我们还证明了我们的协变公式满足反射熵所需的所有不等式。我们在各种例子中使用这个公式,证明它在说明熵不可见的多体纠缠结构中的相关性。

英文摘要:

Recent work has demonstrated the need to include contributions from entanglement islands when computing the entanglement entropy in QFT states coupled to regions of semiclassical gravity. We propose a new formula for the reflected entropy that includes additional contributions from such islands. We derive this formula from the gravitational path integral by finding additional saddles that include generalized replica wormholes. We also demonstrate that our covariant formula satisfies all the inequalities required of the reflected entropy. We use this formula in various examples that demonstrate its relevance in illustrating the structure of multipartite entanglement that are invisible to the entropies.

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