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

Session

1st afternoon session

22 Jun 2026, 14:30

Physics Department, University of Coimbra

Conveners

1st afternoon session

• Bugra Tuzemen (IFPAN)

29. Vortex pinning in a spin-triplet superfluid

Riku Rantanen (Aalto University)

22/06/2026, 14:30

Talk

Vortex dynamics in superfluids is strongly affected by the presence of impurities or obstacles that can act as pinning sites. Pinning of quantized vortices inside a neutron star is predicted to play an important role in its rotational dynamics and can lead to sudden changes in angular velocity known as glitches. In a system with a multicomponent order parameter, such as a spin-triplet...

28. Investigating pinning in neutron stars with simulations and laboratory experiments

Brynmor Haskell (Universita' degli Studi di Milano, Italy)

22/06/2026, 15:20

Talk

Vortex pinning in neutron stars: i.e. strong interactions between superfluid neutron vortices and normal components of the star, is a key ingredient in theoretical models for astrophysical phenomena such as pulsar glitches.
In this talk I will describe how we can make progress in understanding the nature of pinning by studying a laboratory analogue system, i.e. superfluid Helium 3 in the...

34. Vortex Avalanches and Pinning Scales

Ali Alpar (Sabanci University)

22/06/2026, 15:45

Talk

Vortex avalanches as distinct from large fluctuations in continuous dynamics require the breaking of scale invariance. A simple model for avalanches, based on intrinsic scales of pinning forces and of substrates sustaining pinning centers is presented. Applications to pulsar glitches and analogue experiments in laboratory condensates are discussed.