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

Session

1st afternoon session

Jun 23, 2026, 2:30 PM

Physics Department, University of Coimbra

Conveners

1st afternoon session

• Dario Ballarini (CNR Nanotec)

27. Quantum turbulence in a Bose gas close to an anomalous non-thermal fixed point

Prof. Thomas Gasenzer (Heidelberg University, Germany)

6/23/26, 2:30 PM

Talk

Our work focuses on decaying quantum turbulence in the vicinity of an anomalous non-thermal fixed point (NTFP) characterized by slow, subdiffusive coarsening of a length scale. The NTFP is approached in the temporal evolution of a quasi-2d dilute Bose gas starting from variously sampled initial vortex configurations. The universal dynamics is accompanied by the build-up of an inverse energy...

53. Self-consistently connecting the neutron star mode spectrum to fundamental nuclear physics

Duncan Neill (University of Bath)

6/23/26, 3:20 PM

Talk

Neutron star (NS) asteroseismology is a powerful tool for probing the nature of matter inside NSs, with various oscillation modes being sensitive to different properties of matter in different regions of the star, and thus to different aspects of fundamental nuclear physics. Current asteroseismic studies however focus on particular families of oscillation modes, or rely on phenomenological...

32. Modeling neutron star glithces triggered by superfluid vortex avalanches

Alessandro Costanzo

6/23/26, 3:45 PM

Poster

Neutron stars glitches, sudden spin-up events observed in their rotation, can be attributed to a transfer of angular momentum from an internal superfluid reservoir through a superfluid vortex-avalanche process. This research extends existing models by introducing new hypotheses in order to achieve a self-consistent description of superfluid vortex dynamics and avalanche probability....

48. Performance and Dynamics of an Ultracold Atomic Superfluid as a Quantum Engine Working Fluid

Henry Harper-Gardner (Newcastle University)

6/23/26, 3:50 PM

Poster

Bose-Einstein condensation is a ubiquitous phenomenon, present across a multitude of physical scales, from coherence among some thousands of atoms, to macroscopic superfluidity in liquid helium, up to theorised superfluid-superconducting neutrons and protons responsible for observed glitches in neutron stars. At all of these scales, questions persist around the subject of non-equilibrium...

21. Interactive 3D Particle-In-Cell Simulation of a Global Pulsar Magnetosphere

Armin Vahdat (University of Tübingen)

6/23/26, 3:55 PM

Poster

We present an interactive 3D Particle-In-Cell (PIC) simulation of a global pulsar magnetosphere implemented in a browser-based HTML/WebGL environment. The model self-consistently evolves electromagnetic fields and relativistic plasma by solving Maxwell’s equations on a discretized grid (Yee scheme) coupled to particle dynamics via the Lorentz force. Charged particles are advanced using a...

19. Probing the Stability of Neutron Star Magnetic Fields through Configurational Entropy

Brynmor Haskell (Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences), Davide Castellani (Università degli Studi di Milano)

6/23/26, 4:00 PM

Poster

The internal magnetic field configuration of neutron stars remains a key open problem in relativistic astrophysics, with significant implications for their evolution and electromagnetic and gravitational-wave emission. In our work, we investigated the stability of axisymmetric magnetic field configurations in a $n=1$ polytropic neutron star by combining the study of Configurational Entropy...

42. Quantum many-body physics of ultracold Fermi gases on a spherical surface

Lorenzo Frigato (Università degli Studi di Padova)

Poster

Recent experimental realizations of ultracold atom bubble traps in microgravity conditions have triggered the exploration of quantum many-body physics in curved geometries, beyond the flat-space paradigm. We investigate a two-component Fermi gas on a spherical surface, analyzing how the interplay between curvature and interactions modifies its physical properties, both at finite and zero...