14d ago
Bad Metal Behavior and Lifshitz Transition of a Nagaoka Ferromagnet
Jonas Arnold · Peter Kopietz · Andreas Rückriegel
Abstract
Author(s): Jonas Arnold, Peter Kopietz, and Andreas Rückriegel<br/><p>Using an extension of the fermionic functional renormalization group for systems where strong correlations give rise to projected Hilbert spaces, we calculate the phase diagram and the electronic spectral function of the Hubbard model at infinite on-site repulsion. For a square lattice with nearest-…</p><br/>[Phys. Rev. Lett. 137, 096506] Published Fri Aug 28, 2026
Discussion · 0
Sign in to join the discussion.