Radiation from accelerated impurities in Bose-Einstein condensate

Details Radiation from accelerated impurities in Bose-Einstein condensate Radiation from accelerated impurities in Bose-Einstein condensate

2010-08-25

arxiv.org/abs/1008.4200v1

Physics

Quantum Physics

8 pages

Scientific paper

We investigate radiation spectra arising from accelerated point-like impurities in the homogeneous Bose-Einstein condensate. A general formula for the radiation spectrum is obtained in the integral form as a function of given impurity trajectory. The Planckian spectrum is obtained for a special accelerated motion, which is shown to be unphysical. Non-Planckian spectrum is found in the case of a uniformly accelerated impurity. We compare our result with similar settings as discussed in other quantum many-body systems.

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