论文标题
Fermionic Open Eft来自全息图
Fermionic Open EFT from Holography
论文作者
论文摘要
在这项工作中，我们启动了与全息浴相互作用的开放有效领域理论的研究。作为朝这个方向迈出的第一步，我们解释了最近确定的全息图schwinger-keldysh鞍座自然地再现边界相关因子的费米 - 迪拉克统计。我们研究了dirac fermions在双倍的$ ads_ {d+1} $ schwarzchild Blackbrane的背景中传播。我们在边界梯度扩展中求解了dirac场的ingoing（准正常）和外向（鹰）模式，并将我们的发现与$ d = 2 $的确切结果进行比较。全息图schwinger-keldysh边界条件自动选择与费米子KMS关系一致的这些模式的唯一组合。使用这些溶液评估散装的壳作用，我们获得了梯度扩张中探针效果阶段的显式表达。
In this work we initiate the study of open effective field theories of fermions interacting with holographic baths. As a first step in this direction, we explain how the recently identified holographic Schwinger-Keldysh saddles naturally reproduce the Fermi-Dirac statistics of boundary correlators. We study Dirac fermions propagating in the background of a doubled $AdS_{d+1}$ Schwarzchild blackbrane. We solve for both ingoing (quasi-normal) as well as outgoing (Hawking) modes of the Dirac field in a boundary gradient expansion and compare our findings against exact results in $d=2$. The holographic Schwinger-Keldysh boundary conditions automatically select a unique combination of these modes consistent with fermionic KMS relations. Evaluating the bulk on-shell action using these solutions, we obtain an explicit expression for the influence phase of the probe fermion in a gradient expansion.
