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arXiv 0807.2602cond-mat.othercond-mat.stat-mech
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强相互作用玻色-爱因斯坦凝聚体的Bragg光谱

Bragg spectroscopy of a strongly interacting Bose-Einstein condensate

J. J. Kinnunen, M. J. Holland

摘要:

利用含时Hartree-Fock-Bogoliubov理论研究了强相互作用玻色-爱因斯坦凝聚体的Bragg光谱。我们包括近似的影响的动量相关的散射振幅,这被证明是在确定大动量布拉格散射的频谱的主导因素。布拉格散射原子的凝聚显着改变所观察到的激发光谱,通过创建一个新的配对通道的移动对。

英文摘要:

We study Bragg spectroscopy of a strongly interacting Bose-Einstein condensate using time-dependent Hartree-Fock-Bogoliubov theory. We include approximatively the effect of the momentum dependent scattering amplitude which is shown to be the dominant factor in determining the spectrum for large momentum Bragg scattering. The condensation of the Bragg scattered atoms is shown to significantly alter the observed excitation spectrum by creating a novel pairing channel of mobile pairs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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