Weakly interacting quasiparticles play a central role in the low-energy description of many
phases of quantum matter. At higher energies, however, quasiparticles cease to be well …

There has been a surge of interest in effective non-Lorentzian theories of excitations with
restricted mobility, known as fractons. Examples include defects in elastic materials, vortex …

We study complex scalar theories with dipole symmetry and uncover a no-go theorem that
governs the structure of such theories and which, in particular, reveals that a Gaussian …

We study a simple model of interacting bosons on ad-dimensional cubic lattice whose
dynamics conserves both total boson number and total boson dipole moment. This model …

Quantum many-body systems with fracton constraints are widely conjectured to exhibit
unconventional low-energy phases of matter. In this paper, we demonstrate the existence of …

Hydrodynamics is a universal effective theory that describes the thermalization of chaotic
many-body systems, and depends only on the symmetries of the underlying theory. Although …

We study the quantum phase diagram of a Bose-Hubbard chain whose dynamics conserves
both a boson number and boson dipole moment, a situation which can arise in strongly tilted …

We consistently couple simple continuum field theories with fracton excitations to curved
spacetime backgrounds. We consider homogeneous and isotropic fracton field theories, with …

A bstract We develop a Schwinger-Keldysh effective field theory describing the
hydrodynamics of a fluid with conserved charge and dipole moments, together with …

Approximate symmetries abound in nature. If these symmetries are also spontaneously
broken, the would-be Goldstone modes acquire a small mass, or inverse correlation length …