A Toy Model of Entwinement
High Energy Physics - Theory
2016-08-16 v2
Abstract
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.
Keywords
Cite
@article{arxiv.1608.02040,
title = {A Toy Model of Entwinement},
author = {Jennifer Lin},
journal= {arXiv preprint arXiv:1608.02040},
year = {2016}
}
Comments
23 pages. v2: references added