Systems of Hess-Appel'rot type

TL;DR

This paper generalizes the classical Hess-Appel'rot rigid body system to higher dimensions, providing a Lax pair and algebro-geometric integration methods, and introduces an axiomatic framework for this class of systems.

Contribution

It constructs higher-dimensional Hess-Appel'rot type systems with integrability properties and develops an axiomatic approach for their classification.

Findings

Constructed higher-dimensional Hess-Appel'rot systems.

Provided a Lax pair with spectral parameter for integration.

Established an axiomatic framework for systems of Hess-Appel'rot type.

Abstract

We construct higher-dimensional generalizations of the classical Hess-Appel'rot rigid body system. We give a Lax pair with a spectral parameter leading to an algebro-geometric integration of this new class of systems, which is closely related to the integration of the Lagrange bitop performed by us recently and uses Mumford relation for theta divisors of double unramified coverings. Based on the basic properties satisfied by such a class of systems related to bi-Poisson structure, quasi-homogeneity, and conditions on the Kowalevski exponents, we suggest an axiomatic approach leading to what we call the "class of systems of Hess-Appel'rot type".