The problem of a hydrogen atom in a cavity: Oscillator representation solution versus analytic solution

A solution to the problem of a hydrogenic atom in a homogeneous dielectric medium with a concentric spherical cavity using the oscillator representation method (ORM) is presented. The results obtained by the ORM are compared with a known exact analytic solution. The energy levels of the hydrogenic a...

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Autor principal:	Chaudhuri Sid
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	hydrogenic impurity cavity model oscillator representation method quantum dot shallow-deep energy level transition Physics QC1-999
Acceso en línea:	https://doaj.org/article/87042192cac6439fbf9910f150fbb56c
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spelling	oai:doaj.org-article:87042192cac6439fbf9910f150fbb56c2021-12-05T14:11:02ZThe problem of a hydrogen atom in a cavity: Oscillator representation solution versus analytic solution2391-547110.1515/phys-2021-0201https://doaj.org/article/87042192cac6439fbf9910f150fbb56c2021-03-01T00:00:00Zhttps://doi.org/10.1515/phys-2021-0201https://doaj.org/toc/2391-5471A solution to the problem of a hydrogenic atom in a homogeneous dielectric medium with a concentric spherical cavity using the oscillator representation method (ORM) is presented. The results obtained by the ORM are compared with a known exact analytic solution. The energy levels of the hydrogenic atom in a spherical cavity exhibit a shallow-deep instability as a function of the cavity radius. The sharpness of the transition depends on the value of the dielectric constant of the medium. The results of the ORM agree well with the results obtained by the analytic solution when the shallow-deep transition is not too sharp (i.e., when the dielectric constant is not too large) for all values of the cavity radius. The ORM results in the zeroth order approximation diverge significantly in the region of the shallow-deep transition (i.e., for the values of the radius where the shallow-deep transition occurs) when the dielectric constant is high and as a result the transition is sharp. Even for the sharp transition, the ORM results again agree very well with the analytic results at least for the ground state when a commonly used approximation in the ORM is removed. The ORM methodology for the cavity model presented in this article can potentially be used for two-electron systems in a quantum dot.Chaudhuri SidDe Gruyterarticlehydrogenic impurity cavity modeloscillator representation methodquantum dotshallow-deep energy level transitionPhysicsQC1-999ENOpen Physics, Vol 19, Iss 1, Pp 61-68 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydrogenic impurity cavity model oscillator representation method quantum dot shallow-deep energy level transition Physics QC1-999
spellingShingle	hydrogenic impurity cavity model oscillator representation method quantum dot shallow-deep energy level transition Physics QC1-999 Chaudhuri Sid The problem of a hydrogen atom in a cavity: Oscillator representation solution versus analytic solution
description	A solution to the problem of a hydrogenic atom in a homogeneous dielectric medium with a concentric spherical cavity using the oscillator representation method (ORM) is presented. The results obtained by the ORM are compared with a known exact analytic solution. The energy levels of the hydrogenic atom in a spherical cavity exhibit a shallow-deep instability as a function of the cavity radius. The sharpness of the transition depends on the value of the dielectric constant of the medium. The results of the ORM agree well with the results obtained by the analytic solution when the shallow-deep transition is not too sharp (i.e., when the dielectric constant is not too large) for all values of the cavity radius. The ORM results in the zeroth order approximation diverge significantly in the region of the shallow-deep transition (i.e., for the values of the radius where the shallow-deep transition occurs) when the dielectric constant is high and as a result the transition is sharp. Even for the sharp transition, the ORM results again agree very well with the analytic results at least for the ground state when a commonly used approximation in the ORM is removed. The ORM methodology for the cavity model presented in this article can potentially be used for two-electron systems in a quantum dot.
format	article
author	Chaudhuri Sid
author_facet	Chaudhuri Sid
author_sort	Chaudhuri Sid
title	The problem of a hydrogen atom in a cavity: Oscillator representation solution versus analytic solution
title_short	The problem of a hydrogen atom in a cavity: Oscillator representation solution versus analytic solution
title_full	The problem of a hydrogen atom in a cavity: Oscillator representation solution versus analytic solution
title_fullStr	The problem of a hydrogen atom in a cavity: Oscillator representation solution versus analytic solution
title_full_unstemmed	The problem of a hydrogen atom in a cavity: Oscillator representation solution versus analytic solution
title_sort	problem of a hydrogen atom in a cavity: oscillator representation solution versus analytic solution
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/87042192cac6439fbf9910f150fbb56c
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The problem of a hydrogen atom in a cavity: Oscillator representation solution versus analytic solution

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