Event Details

I will discuss the effective string theory of vortex lines in low temperature fluids and superfluids, describing the bulk dynamics in terms of a two-form to which these lines can couple, and writing the most general Lagrangian consistent with (spontaneously broken) Poincare invariance and worldsheet reparametrization invariance. The string tension and other couplings exhibit RG running already at the classical level. We can apply this picture to the study of vortex lines and rings, their stability under perturbations, and their interactions with bulk sound.