A centered vortex line and its pair current in a spherically trapped fermion superfluid

P. CAPUZZI; E. S. HERNÁNDEZ; L. SZYBISZ

Buenos Aires

Conferencia; 27th International Conference on Low Temperature Physics; 2014

We examine the effects of stationary vortices in superfluid 6Li atoms at zero temperature in the frame of a fluiddynamical scheme, including the pair density and its associated pair current in addition to the fields appearing in the hydrodynamical description of standard superfluids. In this frame, the presence of any particle velocity field gives rise to the appearance of a pair current. As an illustration, we study a stationary centred vortex line in an unpolarized fluid, and examine the effects of the rotational velocity field on the spatial structure of the equilibrium gap and the profiles of the pair current. We show that the latter is the source of an outwards drift for the velocity field.