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Temperature dependence of the energy-level shift induced by the Bose–Einstein condensation of photons |
Zhang Jian-Jun (张建军), Cheng Ze (成泽), Yuan Jian-Hui (袁建辉), Zhang Jun-Pei (张俊佩) |
School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China |
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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 Tc, 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.
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Received: 06 January 2012
Revised: 04 April 2012
Accepted manuscript online:
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PACS:
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05.30.Jp
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(Boson systems)
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32.70.Cs
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(Oscillator strengths, lifetimes, transition moments)
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42.50.Nn
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(Quantum optical phenomena in absorbing, amplifying, dispersive and conducting media; cooperative phenomena in quantum optical systems)
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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
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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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