Dual Spectroscopy of Quantum Simulated Fermi-Hubbard Systems

Author(s): K. Knakkergaard Nielsen, M. Zwierlein, and G. M. Bruun Quantum gas microscopy with atoms in optical lattices provides remarkable insights into the real space properties of many-body systems, but does not directly reveal the nature of their fundamental excitation spectrum. Here, we demonstrate that radio-frequency spectroscopy can reveal the quasiparticl… [Phys. Rev. Lett. 135, 043401] Published Wed Jul 23, 2025