On vertex algebra representations of the Schr\"{o}dinger-Virasoro Lie algebra

TL;DR

This paper constructs vertex algebra representations of the Schr"odinger-Virasoro Lie algebra, extending conformal field theory concepts to non-relativistic symmetries relevant in statistical physics models.

Contribution

It introduces a new framework for vertex algebra representations of the Schr"odinger-Virasoro algebra using symplectic and free bosons, and defines primary fields with non-relativistic mass.

Findings

Constructed vertex algebra representations of rak{sv}

Defined Schrd6dinger-Virasoro primary fields

Computed two- and three-point functions for massive fields

Abstract

The Schr\"{o}dinger-Virasoro Lie algebra \mathfrak{sv} is an extension of the Virasoro Lie algebra by a nilpotent Lie algebra formed with a bosonic current of weight 3/2 and a bosonic current of weight 1. It is also a natural infinite-dimensional extension of the Schr\"odinger Lie algebra, which -leaving aside the invariance under time-translation - has been proved to be a symmetry algebra for many statistical physics models undergoing a dynamics with dynamical exponent z=2; it should consequently play a role akin to that of the Virasoro Lie algebra in two-dimensional equilibrium statistical physics. We define in this article general Schr\"odinger-Virasoro primary fields by analogy with conformal field theory, characterized by a 'spin' index and a (non-relativistic) mass, and construct vertex algebra representations of \mathfrak{sv} out of a charged symplectic boson and a free boson. We also compute two- and three-point functions of still conjectural massive fields that are defined by analytic continuation with respect to a formal parameter.