Excited state entanglement in homogeneous fermionic chains
From MaRDI portal
Publication:5169537
DOI10.1088/1751-8113/47/24/245301zbMATH Open1300.28006arXiv1401.5922OpenAlexW2149022629MaRDI QIDQ5169537
Author name not available (Why is that?)
Publication date: 10 July 2014
Published in: (Search for Journal in Brave)
Abstract: We study the Renyi entanglement entropy of an interval in a periodic fermionic chain for a general eigenstate of a free, translational invariant Hamiltonian. In order to analytically compute the entropy we use two technical tools. The first one is used to reduce logarithmically the complexity of the problem and the second one to compute the R'enyi entropy of the chosen subsystem. We introduce new strategies to perform the computations, derive new expressions for the entropy of these general states and show the perfect agreement of the analytical computations and the numerical outcome. Finally we discuss the physical interpretation of our results and generalise them to compute the entanglement entropy for a fragment of a fermionic ladder.
Full work available at URL: https://arxiv.org/abs/1401.5922
No records found.
No records found.
This page was built for publication: Excited state entanglement in homogeneous fermionic chains
Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q5169537)
