Tzitzeica solitons vs. relativistic Calogero-Moser 3-body clusters

TL;DR

This paper reveals a connection between relativistic Calogero-Moser systems and Tzitzeica solitons, showing how solitons can be viewed as particle-antiparticle clusters in a specific phase space submanifold.

Contribution

It establishes a novel link between hyperbolic relativistic Calogero-Moser systems and Tzitzeica soliton solutions, providing a new interpretation of solitons as particle-antiparticle clusters.

Findings

Identification of a Poincaré-invariant submanifold in phase space

Construction of real-valued Tzitzeica N-soliton tau-functions

Interpretation of solitons as particle-antiparticle clusters in lowest energy state

Abstract

We establish a connection between the hyperbolic relativistic Calogero-Moser systems and a class of soliton solutions to the Tzitzeica equation (aka the Dodd-Bullough-Zhiber-Shabat-Mikhailov equation). In the 6N-dimensional phase space $\Omega$ of the relativistic systems with 2N particles and $N$ antiparticles, there exists a 2N-dimensional Poincar\'e-invariant submanifold $\Omega_P$ corresponding to $N$ free particles and $N$ bound particle-antiparticle pairs in their ground state. The Tzitzeica $N$-soliton tau-functions under consideration are real-valued, and obtained via the dual Lax matrix evaluated in points of $\Omega_P$. This correspondence leads to a picture of the soliton as a cluster of two particles and one antiparticle in their lowest internal energy state.