Collective excitations of a quantized vortex in 3P2 superfluids in neutron stars
Abstract
We discuss collective excitations (both fundamental and solitonic excitations) of quantized superfluid vortices in neutron 3P2 superfluids, which likely exist in high density neutron matter such as neutron stars. Besides the well-known Kelvin modes (translational zero modes), we find a gapfull mode whose low-energy description takes the simple form of a double sine-Gordon model. The associated kink solution and its effects on spontaneous magnetization inside the vortex core are analyzed in detail.
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