Holographic simulations show that composite vortices in miscible binary superfluids split into singly quantized vortices with temperature-dependent instabilities and no persistent extra vortices.
Holographic model of superfluidity
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abstract
We study a holographic model of a relativistic quantum system with a global U(1) symmetry, at non-zero temperature and density. When the temperature falls below a critical value, we find a second-order superfluid phase transition with mean-field critical exponents. In the symmetry-broken phase, we determine the speed of second sound as a function of temperature. As the velocity of the superfluid component relative to the normal component increases, the superfluid transition goes through a tricritical point and becomes first-order.
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Splitting dynamics of quantized composite vortices in holographic miscible binary superfluids
Holographic simulations show that composite vortices in miscible binary superfluids split into singly quantized vortices with temperature-dependent instabilities and no persistent extra vortices.