Non-Fermi liquids from kinetic constraints in tilted optical lattices
arXiv:2302.08499 · doi:10.1103/PhysRevLett.131.043403
Abstract
We study Fermi-Hubbard models with kinetically constrained dynamics that conserves both total particle number and total center of mass, a situation that arises when interacting fermions are placed in strongly tilted optical lattices. Through a combination of analytics and numerics, we show how the kinetic constraints stabilize an exotic non-Fermi liquid phase described by fermions coupled to a gapless bosonic field, which in many respects mimics a dynamical gauge field. This offers a novel route towards the study of non-Fermi liquid phases in the precision environments afforded by ultracold atom platforms.
arXiv comment4 pages + appendices; v2: minor changes
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