Plane wave stability analysis of Hartree and quantum dissipative systems
NONLINEARITY(2023)
Abstract
We investigate the stability of plane wave solutions of equations describing quantum particles interacting with a complex environment. The models take the form of PDE systems with a non local (in space or in space and time) self-consistent potential; such a coupling lead to challenging issues compared to the usual nonlinear Schrodinger equations. The analysis relies on the identification of suitable Hamiltonian structures and Lyapounov functionals. We point out analogies and differences between the original model, involving a coupling with a wave equation, and its asymptotic counterpart obtained in the large wave speed regime. In particular, while the analogies provide interesting intuitions, our analysis shows that it is illusory to obtain results on the former based on a perturbative analysis from the latter.
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Key words
Hartree equation,open quantum systems,particles interacting with a vibrational field,Schrodinger-Wave equation,plane wave,orbital stability
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