On vertex algebra representations of the Schrödinger-Virasoro Lie algebra

Jeremie Unterberger

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On vertex algebra representations of the Schrödinger-Virasoro Lie algebra

Jeremie Unterberger

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Abstract

The Schrödinger-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 Schrödinger 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 Schrödinger-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.

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Jeremie Unterberger. 2007-03-09. On vertex algebra representations of the Schrödinger-Virasoro Lie algebra. https://arxiv.org/abs/cond-mat/0703214

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