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Modification of energy shifts of atoms by the presence of a boundary at finite temperature and the Casimir-Polder force
Zhu Zhi-Ying,Yu Hong-Wei * #
Department of Physics, Hunan Normal University
*Correspondence author
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Funding: 教育部博士点基金,国家自然科学基金（No.20070542002,）
Opened online:12 March 2009
Accepted by: none
Citation: Zhu Zhi-Ying,Yu Hong-Wei.Modification of energy shifts of atoms by the presence of a boundary at finite temperature and the Casimir-Polder force[OL]. [12 March 2009] http://en.paper.edu.cn/en_releasepaper/content/30209
 
 
We study the modification by the presence of a plane wall of energy level shifts of two-level atoms which are in multipolar coupling with quantized electromagnetic fields at the finite temperature in a formalism which separates the contributions of thermal fluctuations and radiation reaction and allows a distinct treatment to atoms in the ground and excited states. The position dependent energy shifts give rise to an induced force acting on the atoms. We are able to identify three different regimes where the force shows distinct features and examine, in all regimes, the behaviors of this force in both the low temperature limit and the high temperature limit for both the ground state and excited state atoms, thus providing some new physical insights into the atom-wall interaction at finite temperature.
Keywords:Casimir-Polder force;interaction between atoms and surface;vacuum fluctuation;QED
 
 
 

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