Quantum acoustic bremsstrahlung of impurity atoms in a Bose--Einstein condensate

Details Quantum acoustic bremsstrahlung of impurity atoms in a Bose--Einstein condensate Quantum acoustic bremsstrahlung of impurity atoms in a Bose--Einstein condensate

2002-05-11

arxiv.org/abs/cond-mat/0205235v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 1 figure

Scientific paper

We study the process of scattering of two impurity atoms accompanied by
generation of an elementary excitation in a surrounding Bose--Einstein
condensate. This process, unlike the phonon generation by a {\it single}
impurity atom, has no velocity threshold and can be regarded as a quantum
acoustic analog of a bremsstrahlung in quantum electrodynamics.

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