quantum turbulence


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quantum turbulence

[′kwän·təm ′tər·byə·ləns]
(cryogenics)
A phenomenon observed in a channel filled with superfluid and subjected to a heat flux which exceeds a certain critical value, in which the superfluid becomes filled with a tangled mass of quantized vortex lines.
References in periodicals archive ?
Turbulence in superfluid helium, known as quantum turbulence, is special, because quantum mechanics restricts all vortices to have a single fixed value of circulation.
Our goal is to confront the two remaining, mutually interconnected, challenges of quantum turbulence in the T=0 limit: (i) to observe and investigate the elementary processes occurring with individual vortex lines inside bulk tangles; (ii) explore the interaction, and its consequences, of vortex lines with solid boundaries.
The graduate text explores perceptual control theory, extends the theoretical concept of 2D quantum turbulence to derive the analytical (closed-form) model of 3D turbulent wind flow, and presents recursive Bayesian techniques for cognitive estimation in autonomous systems and FastSLAM algorithms.
This is the strange world of quantum turbulence, which pops up not in coffee cups, but in super-cold helium, other types of strange cold matter and, some now think, the fabric of the universe.
Two colleagues, physicists who had been thinking about the dynamics of quantum turbulence since Feynman's time, got wind of the new technique.
By studying turbulence in other quantum fluids, such as an ultracold gaslike state of matter called a Bose-Einstein condensate, scientists might get a more complete picture of quantum turbulence and answer some lingering questions.
Real quantum turbulence, not just an analog, may even have occurred at more distant reaches.
All shook up Though you won't spot quantum turbulence in your coffee mug or kitchen sink, you probably experience some form of classical turbulence every day.
Another 17 articles review the current status of such condensed matters as quantum Hall effects: discovery and application, extreme mechanics: self-folding origami, glass and jamming transitions: from exact results to finite-dimensional descriptions, diagonalizing transfer matrices and matrix product operators: a medley of exact and computational methods, and Andreev reflections in superfluid 3He: a probe for quantum turbulence. ([umlaut] Ringgold, Inc., Portland, OR)
The author covers superfluidity and the order parameter, quantum turbulence, Higgs, renormalization, the Halper-Huang scalar field, the dynamics of spacetime, black holes, the big bang, the creation of matter, and a wide variety of other related subjects over the course of the bookAEs eleven chapters.
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