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math-ph2026
Entanglement entropy of ground states of the Landau Hamiltonian on the half-plane
Paul Pfeiffer, Wolfgang Spitzer
We study the entanglement entropy of ground states of a Hamiltonian defined on a domain with a boundary. Surprisingly, boundary conditions can change the spectrum and the nature of…
math-ph2024
Entanglement entropy in the ground state of non-interacting massless Dirac fermions in dimension one
Fabrizio Ferro, Paul Pfeiffer, Wolfgang Spitzer
We present a novel proof of a formula of Casini and Huerta for the entanglement entropy of the ground state of non-interacting massless Dirac fermions in dimension one localized to…