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Calculating Force Using QM Stress Tensor
Posted 18 dic 2021, 05:10 GMT-5 Modeling Tools & Definitions, Parameters, Variables, & Functions, Equation-Based Modeling Version 5.5 0 Replies
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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.
Hello J. Smith
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