Quantum Liouville-space trajectories for dissipative systems

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In this paper we present a new quantum-trajectory based treatment of quantum dynamics suitable for dissipative systems. Starting from a de Broglie/Bohm-like representation of the quantum density matrix, we derive and define quantum equations-of-motion for Liouville-space trajectories for a generalized system coupled to a dissipative environment. Our theory includes a vector potential which mixes forward and backwards propagating components and non-local quantum potential which continuously produces coherences in the system. These trajectories are then used to propagate an adaptive Lagrangian grid which carries the density matrix, $ρ(x,y)$, and the action, $A(x,y)$, thereby providing a complete hydrodynamic-like description of the dynamics.
4 pages 2 figures

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/89322

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/quant-ph/0102055
 http://arxiv.org/abs/quant-ph/0102055

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arXiv