Relative Poisson bialgebras and Frobenius Jacobi 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 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. Contents 1. Introduction 1 1.1. Generalizations of Poisson algebras 1 1.2. Frobenius Jacobi algebras and relative Poisson bialgebras 3 1.3. Layout of the paper 4 2. Representations and matched pairs of relative Poisson algebras 4 2.1. Representations of relative Poisson algebras and Jacobi algebras 5 2.2. Matched pairs of relative Poisson algebras 9 3. Relative Poisson bialgebras 3.1. Frobenius relative Poisson algebras and Manin triples of relative Poisson algebras 3.2. Relative Poisson bialgebras 4. Coboundary relative Poisson bialgebras 4.1. Coboundary relative Poisson bialgebras 4.2. O-operators of relative Poisson algebras 4.3. Relative pre-Poisson algebras 5. Relative Poisson bialgebras and Frobenius Jacobi algebras References