Triviality of Entanglement Entropy in the Galilean Vacuum
Abstract
We study the entanglement entropy of the vacuum in non-relativistic local theories with Galilean or Schr\"odinger symmetry. We clear some confusion in the literature on the free Schr\"odinger case. We find that with only positive U(1) charge particles (states) and a unique zero U(1) charge state (the vacuum) the entanglement entropy must vanish in that state.
0
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.