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Communication Dans Un Congrès Année : 2017

Solitons in a superfluid Fermi gas

Résumé

We will discuss recent results on the theoretical and experimental investigations on solitons in a superfluid Fermi gas along the BCS-BEC crossover. On the theory side, by solving the Bogoliubov de Gennes equations and looking for real and odd solutions for the order parameter, it has been shown that a dark soliton at unitarity posses a large density contrast and fermionic bound states. The superfluid gap is found to be significantly quenched by the presence of the soliton due to the occurrence of Andreev fermionic bound states localized near the nodal plane of the order parameter. By solving the time dependent Bogoliubov de Gennes equations, also the decay and collisions of dark solitons has been investigated. Recently, a cascade of Solitonic Excitations in a Superfluid Fermi gas has been experimentally observed.
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Dates et versions

hal-01909525 , version 1 (31-10-2018)

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  • HAL Id : hal-01909525 , version 1

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Mauro Antezza. Solitons in a superfluid Fermi gas. 6.CIRM Conference «New Challenges in Mathematical Modelling and Numerical Simulation of Superfluids, Jul 2017, Marseille, France. ⟨hal-01909525⟩
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