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arXiv 1702.06386hep-thgr-qc
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AdS $_3$ / BCFT $_2$的复杂度/保真度敏感性g-定理

A complexity/fidelity susceptibility g-theorem for AdS$_3$/BCFT$_2$

Mario Flory

摘要:

我们使用最近提出的全息近藤模型作为一个很好理解的例子,AdS/边界CFT(BCFT)的对偶性,并明确表明,在这个模型中,体积沿RG流减少。然后,我们得到了一个证据,证明这种体积损失确实是一个通用的功能,由Takayanagi在2011年提出的类型的AdS/BCFT模型。根据最近的建议全息相关的体积等数量的复杂性或保真度磁化率在双场论,这表明存在一个复杂性或保真度磁化率类似的阿弗莱克-路德维希g定理,著名的状态边界熵沿RG流的BCFT。我们对这种可能性发表评论。

英文摘要:

We use a recently proposed holographic Kondo model as a well-understood example of AdS/boundary CFT (BCFT) duality, and show explicitly that in this model the bulk volume decreases along the RG flow. We then obtain a proof that this volume loss is indeed a generic feature of AdS/BCFT models of the type proposed by Takayanagi in 2011. According to recent proposals holographically relating bulk volume to such quantities as complexity or fidelity susceptibility in the dual field theory, this suggests the existence of a complexity or fidelity susceptibility analogue of the Affleck-Ludwig g-theorem, which famously states the decrease of boundary entropy along the RG flow of a BCFT. We comment on this possibility.

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