Related papers: Force and pressure in many-particle quantum dynamics

Force and pressure in many-particle quantum dynamics

URL: http://arxiv.org/abs/2006.07974v1
Date: Sun, 14 Jun 2020 18:49:04 GMT
Title: Force and pressure in many-particle quantum dynamics
Authors: G.F. Bertsch
Abstract summary: We show that the quantum kinetic force between parts of an extended quantum system can be described by an operator acting on the boundary between the two subsystems. The contribution to the force due to a short-ranged particle interaction can also be treated in the same way.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The Newtonian concept of force may be useful in some aspects of the dynamics of many-particle quantum systems such as fissioning nuclei. Following Ehrenfest's method, we show that the quantum kinetic force between parts of an extended quantum system can be described by an operator acting on the boundary between the two subsystems. The contribution to the force due to a short-ranged particle interaction can also be treated in the same way. This includes interaction effects treated in density functional theory by local functionals. The force operators are applied to several simple models to demonstrate the method.

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