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Quantum Chemistry
Polarons, Dressed Molecules, and Itinerant Ferromagnetism in ultracold Fermi gases
arXiv
Authors: Pietro Massignan, Matteo Zaccanti, Georg M. Bruun
Year
2013
Paper ID
32963
Status
Preprint
Abstract Read
~2 min
Abstract Words
88
Citations
N/A
Abstract
In this review, we discuss the properties of a few impurity atoms immersed in a gas of ultracold fermions, the so-called Fermi polaron problem. On one side, this many-body system is appealing because it can be described almost exactly with simple diagrammatic and/or variational theoretical approaches. On the other, it provides quantitatively reliable insight into the phase diagram of strongly interacting population imbalanced quantum mixtures. In particular, we show that the polaron problem can be applied to study itinerant ferromagnetism, a long standing problem in quantum mechanics.
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- In this review, we discuss the properties of a few impurity atoms immersed in a gas of ultracold fermions, the so-called Fermi polaron problem.
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