Fracton infrared triangle

Understand

In theories with conserved dipole moment, isolated charged particles (fractons) are immobile, but dipoles can move.

• We couple these dipoles to the fracton gauge theory and analyze the universal infrared structure.
• This uncovers an observable double kick memory effect which we relate to a novel dipole soft theorem.
• Together with their asymptotic symmetries this constitutes the first realization of an infrared triangle beyond Lorentz symmetry.