Coupled hydrodynamics in dipole-conserving quantum systems

@article{Burchards2022CoupledHI,
  title={Coupled hydrodynamics in dipole-conserving quantum systems},
  author={A. G. Burchards and J. R. Feldmeier and Alexander Schuckert and Michael Jason Knap},
  journal={Physical Review B},
  year={2022}
}
We investigate the coupled dynamics of charge and energy in interacting lattice models with dipole conservation. We formulate a generic hydrodynamic theory for this combination of fractonic constraints and numerically verify its applicability to the late-time dynamics of a specific bosonic quantum system by developing a microscopic non-equilibrium quantum field theory. Employing a self-consistent 1 /N approximation in the number of field components, we extract all entries of a generalized diffusion… 
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