Temperature dependence of the energy-level shift induced by the Bose–Einstein condensation of photons

doi:10.1088/1674-1056/21/9/090502

Abstract We investigate the energy-level shift of a hydrogen atom in a two-dimensional optical microcavity, where there exists a Bose-Einstein condensation of photons. It is found that below the critical temperature T_c, the energy-level shift of the bound electron is dependent on temperature, and it is a monotonically increasing function of the absolute temperature T. Especially, at the absolute zero temperature, the energy-level shift entirely comes from the Lamb shift, and the atom can be treated approximately, that is, in vacuum.

Keywords: Bose-Einstein condensation energy-level shift two-level atom

Received: 06 January 2012
Revised: 04 April 2012
Accepted manuscript online:

PACS:	05.30.Jp	(Boson systems)
	32.70.Cs	(Oscillator strengths, lifetimes, transition moments)
	42.50.Nn	(Quantum optical phenomena in absorbing, amplifying, dispersive and conducting media; cooperative phenomena in quantum optical systems)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10174024 and 10474025).

Corresponding Authors: Zhang Jian-Jun
E-mail: ruoshui789@gmail.com

Cite this article:

Zhang Jian-Jun (张建军), Cheng Ze (成泽), Yuan Jian-Hui (袁建辉), Zhang Jun-Pei (张俊佩) Temperature dependence of the energy-level shift induced by the Bose–Einstein condensation of photons 2012 Chin. Phys. B 21 090502

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Temperature dependence of the energy-level shift induced by the Bose–Einstein condensation of photons

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