Entanglement as geometry and flow
Abstract
We explore the connection between the area law for entanglement and geometry by representing the entanglement entropies corresponding to all bipartitions of an -party pure quantum system by means of a (generalized) adjacency matrix. In the cases where the representation is exact, the elements of that matrix coincide with the mutual information between pairs of sites. In others, it provides a very good approximation, and in all the cases it yields a natural {\em entanglement contour} which is similar to previous proposals.Moreover, for one-dimensional conformal invariant systems, the generalized adjacency matrix is given by the two-point correlator of an {\em entanglement current} operator. We conjecture how this entanglement current may give rise to a metric entirely built from entanglement.
Cite
@article{arxiv.1906.05146,
title = {Entanglement as geometry and flow},
author = {Sudipto Singha Roy and Silvia N. Santalla and Javier Rodríguez-Laguna and Germán Sierra},
journal= {arXiv preprint arXiv:1906.05146},
year = {2020}
}
Comments
13 pages, 11 figures, close to the published version