Entanglement resolution of free Dirac fermions on a torus
From MaRDI portal
Publication:6101243
DOI10.1007/JHEP03(2023)096arXiv2212.07261OpenAlexW4360980448MaRDI QIDQ6101243
Author name not available (Why is that?)
Publication date: 31 May 2023
Published in: (Search for Journal in Brave)
Abstract: Whenever a system possesses a conserved charge, the density matrix splits into eigenspaces associated to the each symmetry sector and we can access the entanglement entropy in a given subspace, known as symmetry resolved entanglement (SRE). Here, we first evaluate the SRE for massless Dirac fermions in a system at finite temperature and size, i.e. on a torus. Then we add a massive term to the Dirac action and we treat it as a perturbation of the massless theory. The charge-dependent entropies turn out to be equally distributed among all the symmetry sectors at leading order. However, we find subleading corrections which depend both on the mass and on the boundary conditions along the torus. We also study the resolution of the fermionic negativity in terms of the charge imbalance between two subsystems. We show that also for this quantity, the presence of the mass alters the equipartition among the different imbalance sectors at subleading order.
Full work available at URL: https://arxiv.org/abs/2212.07261
No records found.
No records found.
This page was built for publication: Entanglement resolution of free Dirac fermions on a torus
Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q6101243)
