## Entwinement Entwinement captures the entanglement between degrees of freedom that are *not* spatially organised (internal). Holographically, it probes the entanglement shadow, which [[0007 RT surface|RT]] cannot. ## Refs - original: - [[2014#Balasubramanian, Chowdhury, Czech, de Boer]] - [[CrapsDeClerckLopez2022]][](https://arxiv.org/pdf/2211.17253.pdf): an explicit construction of a reduced density matrix whose [[0301 Entanglement entropy|von Neumann entropy]] agrees with a holographic computation of entwinement