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Calculating Force Using QM Stress Tensor

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The experimental scenario: A beam of particles (Bessel wave function) interacts with a scatterer described by a specific potential energy. The goal is to calculate the force exerted on the scatterers by the beam of particles using the QM Stress Tensor equation provided below:

Which is expressed by potential energy and stationary wave function

The question is how do I provide this stress tensor equation to COMSOL for force calculation?

I have approached the simulation the following interface/study: Physics Interface: Schrödinger Equation (schr) Study: Eigenvalue

I'm completely new to COMSOL QM Simulation. Thus, not really sure which interfaces/modules to employ to perfom this simulation.

I'm trying to reproduce the Figure 1 of https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.180401

all equations/physics mentioned here are from Gorlach AA, Gorlach MA, Lavrinenko AV, Novitsky A. Matter-wave tractor beams. Phys Rev Lett 2017; 118: 180401.


0 Replies Last Post 2021年12月18日 GMT-5 05:10
COMSOL Moderator

Hello J. Smith

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