Swingle, B. (2012). Entanglement and the Fermi surface. Perimeter Institute for Theoretical Physics. https://pirsa.org/12110082
MLA
Swingle, Brian. Entanglement and the Fermi surface. Perimeter Institute for Theoretical Physics, Nov. 27, 2012, https://pirsa.org/12110082
BibTex
@misc{ scivideos_PIRSA:12110082,
doi = {10.48660/12110082},
url = {https://pirsa.org/12110082},
author = {Swingle, Brian},
keywords = {Quantum Matter},
language = {en},
title = {Entanglement and the Fermi surface},
publisher = {Perimeter Institute for Theoretical Physics},
year = {2012},
month = {nov},
note = {PIRSA:12110082 see, \url{https://scivideos.org/index.php/pirsa/12110082}}
}
In this talk I will describe my work characterizing
quantum entanglement in systems with a Fermi surface. This class includes everything from Fermi
liquids to exotic spin liquids in frustrated magnets and perhaps even
holographic systems. I review my
original scaling argument and then describe in detail a number of new precise
results on entanglement in Fermi liquids.
I will also discuss recent quantum Monte Carlo calculations of Renyi
entropies and will argue that we now have a rather complete agreement between
theory and numerics for Fermi liquid entanglement. I will also discuss universal crossovers
between thermal and entanglement entropy and a class of solvable interacting
models where we can prove the universality of the Widom formula for Fermi
surface entanglement. If there is time,
I will comment on several other topics including fluctuations of conserved
quantities and connections to holography.