An Elliptic Parameterisation of the Zamolodchikov Model

TL;DR

This paper introduces an elliptic parametrization of the Zamolodchikov model's tetrahedron equation, revealing new algebraic structures and potential applications in quantum field theory and the AdS/CFT correspondence.

Contribution

It demonstrates that under a specific limit, the tetrahedron equation's weights can be expressed as elliptic functions, connecting to the tetrahedral Zamolodchikov algebra and advancing integrable models.

Findings

Vertex weights are meromorphic functions on an elliptic curve.

Reduction leads to the tetrahedral Zamolodchikov algebra.

Potential applications in AdS/CFT and quantum field theory.

Abstract

The Zamolodchikov model describes an exact relativistic factorized scattering theory of straight strings in (2+1)-dimensional space-time. It also defines an integrable 3D lattice model of statistical mechanics and quantum field theory. The three-string S-matrix satisfies the tetrahedron equation which is a 3D analog of the Yang-Baxter equation. Each S-matrix depends on three dihedral angles formed by three intersecting planes, whereas the tetrahedron equation contains five independent spectral parameters, associated with angles of an Euclidean tetrahedron. The vertex weights are given by rather complicated expressions involving square roots of trigonometric function of the spectral parameters, which is quite unusual from the point of view of 2D solvable lattice models. In this paper we consider a particular four-parameter specialization of the tetrahedron equation when one of its vertices goes to infinity and the tetrahedron itself degenerates into an infinite prism. We show that in this limit all the vertex weights in the tetrahedron equation can be represented as meromorphic functions on an elliptic curve. Moreover we show that a special reduction of the tetrahedron equation in this case leads precisely to an example of the tetrahedral Zamolodchikov algebra, previously constructed by Korepanov. This algebra plays important role for a "layered" construction of the Shastry's R-matrix and the 2D S-matrix appearing in the problem of the ADS/CFT correspondence for N=4 SUSY Yang-Mills theory in four dimensions. Possible applications of our results in this field are briefly discussed.