Gross-Pitaevskii simulations show Josephson coupling creates a bound composite of one ^1S0 SQV and two ^3P2 HQVs that can depin from pinning sites.
Magnetic Properties of Quantized Vortices in Neutron $^3P_2$ Superfluids in Neutron Stars
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abstract
We discuss quantized vortices in neutron $^3P_2$ superfluids, which are believed to realize in high density neutron matter such as neutron stars. By using the Ginzburg-Landau free energy for $^3P_2$ superfluids, we determine the ground state in the absence and presence of the external magnetic field, and numerically construct $^3P_2$ quantized vortices in the absence and presence of the external magnetic field along the vortex axis (poloidal) or angular direction (toroidal). We find in certain situations the spontaneous magnetization of the vortex core, whose typical magnitude is about $10^{7-8}$ Gauss, but the net magnetic field in a neutron star is negligible because of the ratio of the vortex core size $\sim 10$fm and the intervortex distance $\sim 10^{-6}$m in a vortex lattice.
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Formation of bound composite vortices of a singly-quantized $^1$S$_0$ vortex and half-quantized $^3$P$_2$ vortices in the $^1$S$_0$-$^3$P$_2$ coexisting phase in neutron stars
Gross-Pitaevskii simulations show Josephson coupling creates a bound composite of one ^1S0 SQV and two ^3P2 HQVs that can depin from pinning sites.