SCALES 1st General Meeting - Superfluid Condensates in Astrophysics and Laboratory Experiments

Session

2nd afternoon session

25 Jun 2026, 16:40

Physics Department, University of Coimbra

Conveners

2nd afternoon session

• Ian Jones (University of Southampton)

43. Superfluid fraction in the inner crust of neutron stars

Giorgio Almirante

25/06/2026, 16:40

Talk

Neutron stars are fascinating astrophysical objects, containing matter at densities that exceeds the density of atomic nuclei. Among the most puzzling phenomena associated with them are pulsar glitches. Pulsars are rapidly rotating neutron stars, emitting beams of radiation from their magnetic poles and acting as the most precise clocks in the Universe, even surpassing the accuracy of atomic...

60. Josephson currents in neutron stars

Armen Sedrakian (University of Wroclaw and FIAS)

25/06/2026, 17:05

Talk

We demonstrate that the interface between S-wave and P-wave paired
superfluids in neutron stars induces a neutron supercurrent, a
charge-neutral analog of the Josephson junction effect in electronic
superconductors. The proton supercurrent entrainment by the neutron
superfluid generates, in addition to the neutral supercurrent, a
charged current across the interface. Beyond this...

9. Hydrodynamic Simulation of Glitches in Neutron Star Crusts

Mr Charlie Perkins (Newcastle University)

25/06/2026, 17:30

Talk

Many neutron stars exhibit rotational 'glitches' caused by the collective depinning of $>10^7$ superfluid vortices. Gross–Pitaevskii (GP) and point-vortex (PV) simulations have demonstrated glitching behaviour via development of vortex avalanches with $500$-$5000$ vortices. Given that a real neuron star contains more than $>10^{13}$ vortices, simulating glitches in a global-scale model...