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arXiv · 1506.03592

Two-flavor mixture of a few fermions of different mass in a one-dimensional harmonic trap

Daniel Pęcak·Mariusz Gajda·Tomasz Sowiński
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Abstract

A system of two species of fermions of different mass confined in a one-dimensional harmonic trap is studied with an exact diagonalization approach. It is shown independently on the number of particles that a mass difference between fermionic species induces a separation in the lighter flavor system. The mechanism of emerging of separated phases is explained phenomenologically and confirmed with the help of a direct inspection of the ground-state of the system. Finally, it is shown that the separation driven by a mass difference, in contrast to the separation induced by a difference of populations, is robust to the interactions with thermal environment.

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Daniel Pęcak, Mariusz Gajda, Tomasz Sowiński. 2015-06-11. Two-flavor mixture of a few fermions of different mass in a one-dimensional harmonic trap. https://doi.org/10.1088/1367-2630/18/1/013030

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