Inhomogeneous Structures in Holographic Superfluids: II. Vortices

Details Inhomogeneous Structures in Holographic Superfluids: II. Vortices Inhomogeneous Structures in Holographic Superfluids: II. Vortices

2009-12-22

arxiv.org/abs/0912.4280v2

Phys.Rev.D81:126012,2010

Physics

High Energy Physics

High Energy Physics - Theory

32 pages, 10 figures, typos corrected, references added

Scientific paper

10.1103/PhysRevD.81.126012

We study vortex solutions in a holographic model of Herzog, Hartnoll, and Horowitz, with a vanishing external magnetic field on the boundary, as is appropriate for vortices in a superfluid. We study relevant length scales related to the vortices and how the charge density inside the core of the vortex behaves as a function of temperature or chemical potential. We extract the critical superfluid velocity from the vortex solutions, study how it behaves as a function of the temperature, and compare it to earlier studies and to the Landau criterion. We also comment on the possibility of a Berezinskii-Kosterlitz-Thouless vortex confinement-deconfinement transition.

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