Relative Poisson bialgebras and Frobenius Jacobi algebras

TL;DR

This paper introduces the concept of relative Poisson bialgebras and the relative Poisson Yang-Baxter equation, providing new methods to construct Frobenius Jacobi algebras through algebraic structures and operators.

Contribution

It develops the theory of relative Poisson bialgebras, introduces the RPYBE, and links these to Frobenius Jacobi algebras via $ ext{O}$-operators and pre-Poisson algebras.

Findings

Introduction of the relative Poisson Yang-Baxter equation (RPYBE)

Antisymmetric solutions yield coboundary relative Poisson bialgebras

Construction of Frobenius Jacobi algebras from relative pre-Poisson algebras

Abstract

Jacobi algebras, as the algebraic counterparts of Jacobi manifolds, are exactly the unital relative Poisson algebras. The direct approach of constructing Frobenius Jacobi algebras in terms of Manin triples is not available due to the existence of the units, and hence alternatively we replace it by studying Manin triples of relative Poisson algebras. Such structures are equivalent to certain bialgebra structures, namely, relative Poisson bialgebras. The study of coboundary cases leads to the introduction of the relative Poisson Yang-Baxter equation (RPYBE). Antisymmetric solutions of the RPYBE give coboundary relative Poisson bialgebras. The notions of $\mathcal O$-operators of relative Poisson algebras and relative pre-Poisson algebras are introduced to give antisymmetric solutions of the RPYBE. A direct application is that relative Poisson bialgebras can be used to construct Frobenius Jacobi algebras, and in particular, there is a construction of Frobenius Jacobi algebras from relative pre-Poisson algebras.