Superfluid analogies of cosmological phenomena

GE Volovik - Physics Reports, 2001 - Elsevier
In a modern viewpoint relativistic quantum field theory is an emergent phenomenon arising
in the low-energy corner of the physical fermionic vacuum–the medium, whose nature …

Vortex formation in neutron-irradiated superfluid 3He as an analogue of cosmological defect formation

VMH Ruutu, VB Eltsov, AJ Gill, TWB Kibble, M Krusius… - Nature, 1996 - nature.com
TOPOLOGICAL defects formed during a rapid symmetry-breaking phase transition in the
early Universe1, 2 could be responsible for seeding large-scale structure, for the anisotropy …

An explanation for the central stress minimum in sand piles

JP Wittmer, P Claudin, ME Cates, JP Bouchaud - Nature, 1996 - nature.com
A KEY component of a continuum-mechanical description of a sand pile (viewed as an
assembly of hard particles in frictional contact) is the requirement of stress continuity—the …

Shear flow and Kelvin-Helmholtz instability in superfluids

R Blaauwgeers, VB Eltsov, G Eska, AP Finne… - Physical review …, 2002 - APS
The first realization of instabilities in the shear flow between two superfluids is examined.
The interface separating the A and B phases of superfluid H 3 e is magnetically stabilized …

Dynamics of vortices and interfaces in superfluid 3He

AP Finne, VB Eltsov, R Hänninen… - Reports on Progress …, 2006 - iopscience.iop.org
Rapid new developments have occurred in superfluid hydrodynamics since the discovery of
a host of unusual phenomena which arise from the diverse structure and dynamics of …

Vortex formation and dynamics in superfluid 3He and analogies in quantum field theory

VB Eltsov, M Krusius, GE Volovik - Progress in Low Temperature Physics, 2005 - Elsevier
The formation and dynamics of topological defects of different structure has been of central
interest in the study of the 3 He superfluids. Compared to superfluid 4 He-II, the variability of …

Big bang simulation in superfluid 3He-B--Vortex nucleation in neutron-irradiated superflow

VMH Ruutu, VB Eltsov, AJ Gill, TWB Kibble… - arxiv preprint cond-mat …, 1995 - arxiv.org
We report the observation of vortex formation upon the absorption of a thermal neutron in a
rotating container of superfluid $^ 3$ He-B. The nuclear reaction n+ $^ 3$ He= p+ $^ 3$ H+ …

Generation of turbulence by oscillating structures in superfluid helium at very low temperatures

R Hänninen, M Tsubota, WF Vinen - Physical Review B—Condensed Matter …, 2007 - APS
The paper is concerned with the interpretation of many experiments that have been reported
recently on the production of quantum turbulence by oscillating spheres, wires and grids in …

Producing and imaging quantum turbulence via pair-breaking in superfluid

MT Noble, SL Ahlstrom, DI Bradley, EA Guise… - Physical Review B, 2022 - APS
Destroying superfluidity is a fundamental process and in fermionic superfluid such as He 3-B
it splits Cooper pairs into thermal excitations, quasiparticles. At the lowest temperatures, a …

Critical Velocity of Vortex Nucleation in Rotating Superfluid He-

VMH Ruutu, J Kopu, M Krusius, Ü Parts, B Plaçais… - Physical review …, 1997 - APS
We have measured the critical velocity υ c at which 3 He− A in a rotating cylinder becomes
unstable against the formation of quantized vortex lines with continuous (singularity-free) …