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The Study Of The Casimir-Polder Force Between The Neutron And The One Dimensional Coupling Cavity Wall

Posted on:2019-05-03Degree:MasterType:Thesis
Country:ChinaCandidate:J Q QianFull Text:PDF
GTID:2370330563453534Subject:Theoretical Physics
Abstract/Summary:
The Casimir-Polder force is one of the observable macroscopic quantum fluctuations.Since the discovery of 1948,the study of that has never stopped.In theory,people study the Casimir force and the Casimir-Polder force under different neutral particles or different boundary conditions;In the experiment,one verified the theoretical prediction,and the two applied it to various field,such as nanotechnology,quantum information and atomic optics,and speeded up the development process of these application fields to a certain extent.Most of the scientists’research on the Casimir-Polder force between the atom and the cavity wall only takes into account the effect of the fluctuation of the electric field in the space,and neglects the effect of the magnetic fluctuations.This is because the magnetic field fluctuation is much smaller than the electric field fluctuation.In this paper,the Casimir-Polder force between the neutron and the wall of the coupled cavity caused by the fluctuation of magnetic field is studied.On the basis of Ujihara model theory,this paper uses perturbation theory and representation transformation theory,we study the static Casimir-Polder force between neutron and one dimensional coupling cavity wall when the initial states of the system as part of dressed states,and the dynamic Casimir-Polder force between neutron and one dimensional cavity coupling wall when the initial states of the system for the bare ground.The analytical expressions of static and dynamic forces are obtained.The study shows the size and properties of the forces that can be controlled by changing the external magnetic field intensityBext,macrocavity size d,dielectric permittivity of the dielectricεr the neutron location z and other factors.
Keywords/Search Tags:neutron, magnetic fluctuation, external magnetic field, Casimir-Polder force
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