Contact manifolds and dissipation, classical and quantum

Abstract

Motivated by a geometric decomposition of the vector field associated with the Gorini-Kossakowski-Lindblad-Sudarshan (GKLS) equation for finite-level open quantum systems, we propose a generalization of the recently introduced contact Hamiltonian systems for the description of dissipative-like dynamical systems in the context of (non-necessarily exact) contact manifolds. In particular, we show how this class of dynamical systems naturally emerges in the context of Lagrangian Mechanics and in the case of nonlinear evolutions on the space of pure states of a finite-level quantum system.

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• Practical Introduction to Action-Dependent Field Theories
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• Lagrangian description of Heisenberg and Landau-von Neumann equations of motion
• Contact Lie systems on Riemannian and Lorentzian spaces: from scaling symmetries to curvature-dependent reductions
• Constrained Lagrangian dissipative contact dynamics
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• When action is not least for systems with action-dependent Lagrangians
• Equilibria and bifurcations in contact dynamics
• Geometric numerical integration of Liénard systems via a contact Hamiltonian approach