Polarons in a Dipolar Condensate
arXiv:1401.2961 · doi:10.1103/PhysRevA.89.023612
Abstract
We consider a polaronic model in which impurity fermions interact with background bosons in a dipolar condensate. The polaron in this model emerges as an impurity dressed with a cloud of phonons of the dipolar condensate, which, due to the competition between the attractive and repulsive part of the dipole-dipole interaction, obey an anisotropic dispersion spectrum. We study how this anisotropy affects the Cerenkov-like emission of Bogoliubov phonon modes, which can be directly verified by experiments in which a dipolar BEC moves against an obstacle. We also study the spectral function of impurity fermions, which is directly accessible to the momentum resolved rf spectroscopy in cold atoms.
8 pages, 4 figures; typos corrected, references added
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Cited by in corpus (35)
- Quantum dynamics of ultracold Bose polarons
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- Variational study of polarons in Bose-Einstein condensates
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- Bose polarons in ultracold atoms in one dimension: beyond the Fröhlich paradigm
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- Van der Waals coefficients for interactions of dysprosium and erbium atoms with alkali-metal and alkaline-earth-metal atoms