Jacobi Hamiltonian Integrators
This work provides a theoretical foundation for numerical integration in Jacobi dynamics, potentially benefiting researchers in classical physics and computational mechanics dealing with dissipative systems, though it appears incremental as it builds on prior geometric integrator advances.
The authors tackled the problem of constructing structure-preserving integrators for Hamiltonian systems in Jacobi manifolds, which generalize symplectic and Poisson geometry to include time-dependent, dissipative, and thermodynamic phenomena, by developing a method based on the correspondence between Jacobi and homogeneous Poisson manifolds to extend existing Poisson Hamiltonian Integrators techniques.
We develop a method of constructing structure-preserving integrators for Hamiltonian systems in Jacobi manifolds. Hamiltonian mechanics, rooted in symplectic and Poisson geometry, has long provided a foundation for modeling conservative systems in classical physics. Jacobi manifolds, generalizing both contact and Poisson manifolds, extend this theory and are suitable for incorporating time-dependent, dissipative and thermodynamic phenomena. Building on recent advances in geometric integrators - specifically Poisson Hamiltonian Integrators (PHI), which preserve key features of Poisson systems - we propose a construction of Jacobi Hamiltonian Integrators. Our approach explores the correspondence between Jacobi and homogeneous Poisson manifolds, with the aim of extending the PHI techniques while ensuring preservation of the homogeneity structure. This work develops the theoretical tools required for this generalization and outlines a numerical integration technique compatible with Jacobi dynamics. { By focusing on the homogeneous Poisson perspective instead of direct contact realizations, we establish a clear pathway for constructing structure-preserving integrators for time-dependent and dissipative systems that are embedded in the Jacobi framework.