T-2, Nuclear and Particle Physics, Astrophysics and Cosmology

Dynamics of the neutron superfluid

Rishi Sharma
TRIUMF

Over the last decade many ground state properties of fermionic superfluids with a large scattering length have been calculated with sophisticated techniques. These have now been measured in experiments with trapped ultracold Fermi gases. Studies of the rich dynamics of fermionic superfluids are relatively recent and computationally challenging even for simplified fermionic models. I will present a simpler bosonic model, the extended Thomas Fermi (ETF), that is expected to describe dynamics for slowly varying Fermi systems well. We use this model to study dynamics of vortices in the unitary Fermi gas. The calculation is relevant for the phenomenology of glitches in the rotation of neutron stars. I will conclude with a discussion of the limitations of the ETF.

NNSA


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