缠绕的玩具模型
A Toy Model of Entwinement
摘要：
纠缠度是指在轨道折叠CFT的某个扭曲态中，规范变量自由度的子集的纠缠熵，通过将状态嵌入到更大的希尔伯特空间中并去除一些规范约束来定义。我们提出了一个固有的规范不变，代数定义的纠缠。我们的主要证据是一个计算表明，在一个自旋系统，类似于orbifold的CFT，纠缠的模拟是纠缠熵的规范不变的子代数，我们确定。我们回顾为什么纠缠是相关的猜想，纠缠建立时空。
英文摘要：
Entwinement is the entanglement entropy of a subset of gauge-variant degrees of freedom in a certain twisted state of an orbifold CFT, defined by embedding the state in a larger Hilbert space with some gauge constraints removed. We propose an intrinsically gauge-invariant, algebraic definition of entwinement. Our main piece of evidence is a computation showing that, in a spin system that resembles the orbifold CFT, the analog of entwinement is the entanglement entropy of a gauge-invariant subalgebra, which we identify. We review why entwinement is relevant for the conjecture that entanglement builds spacetime.
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