Sound emission and annihilations in a programmable quantum vortex collider

WJ Kwon, G Del Pace, K Xhani, L Galantucci… - Nature, 2021 - nature.com
In quantum fluids, the quantization of circulation forbids the diffusion of a vortex swirling flow
seen in classical viscous fluids. Yet, accelerating quantum vortices may lose their energy …

Giant vortex clusters in a two-dimensional quantum fluid

G Gauthier, MT Reeves, X Yu, AS Bradley, MA Baker… - Science, 2019 - science.org
Adding energy to a system through transient stirring usually leads to more disorder. In
contrast, point-like vortices in a bounded two-dimensional fluid are predicted to reorder …

[HTML][HTML] Mutual friction in bosonic superfluids: a review

YA Sergeev - Journal of Low Temperature Physics, 2023 - Springer
Mutual friction caused by scattering of thermal excitations by quantized vortices is a
phenomenon of key importance for the understanding of vortex dynamics and quantum …

Strongly anomalous non-thermal fixed point in a quenched two-dimensional Bose gas

M Karl, T Gasenzer - New Journal of Physics, 2017 - iopscience.iop.org
Universal scaling behavior in the relaxation dynamics of an isolated two-dimensional Bose
gas is studied by means of semi-classical stochastic simulations of the Gross–Pitaevskii …

[HTML][HTML] Observation of vortex-antivortex pairing in decaying 2D turbulence of a superfluid gas

SW Seo, B Ko, JH Kim, Y Shin - Scientific reports, 2017 - nature.com
In a two-dimensional (2D) classical fluid, a large-scale flow structure emerges out of
turbulence, which is known as the inverse energy cascade where energy flows from small to …

Motion of vortices in inhomogeneous Bose-Einstein condensates

AJ Groszek, DM Paganin, K Helmerson, TP Simula - Physical Review A, 2018 - APS
We derive a general and exact equation of motion for a quantized vortex in an
inhomogeneous two-dimensional Bose-Einstein condensate. This equation expresses the …

Vortex motion quantifies strong dissipation in a holographic superfluid

P Wittmer, CM Schmied, T Gasenzer, C Ewerz - Physical Review Letters, 2021 - APS
Holographic duality provides a description of strongly coupled quantum systems in terms of
weakly coupled gravitational theories in a higher-dimensional space. It is a challenge …

Many-body dissipative flow of a confined scalar Bose-Einstein condensate driven by a Gaussian impurity

GC Katsimiga, SI Mistakidis, GM Koutentakis… - Physical Review A, 2018 - APS
The many-body dissipative flow induced by a mobile Gaussian impurity harmonically
oscillating within a cigar-shaped Bose-Einstein condensate is investigated. For very small …

Theory of the vortex-clustering transition in a confined two-dimensional quantum fluid

X Yu, TP Billam, J Nian, MT Reeves, AS Bradley - Physical Review A, 2016 - APS
Clustering of like-sign vortices in a planar bounded domain is known to occur at negative
temperature, a phenomenon that Onsager demonstrated to be a consequence of bounded …

Universal dynamics in the expansion of vortex clusters in a dissipative two-dimensional superfluid

OR Stockdale, MT Reeves, X Yu, G Gauthier… - Physical Review …, 2020 - APS
A large ensemble of quantum vortices in a superfluid may itself be treated as a novel kind of
fluid that exhibits anomalous hydrodynamics. Here we consider the dynamics of vortex …