Quantum Turbulence in Superfluid 3He-B. PDF Download
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Author: Samantha O''Sullivan
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This thesis describes experiments conducted in 3He-B to investigate the properties of quantum turbulence created by an oscillating grid. The turbulence is detected using an array of vibrating wire resonators. We have measured various steady-state properties of the turbulence includ- ing fluctuations, and investigated how turbulence propagates and evolves by examining the correlations between pairs of detectors. The quantum turbu- lence generated in our experiment is found to decay in a way similar to that found in classical fluids, as described by the Richardson cascade.
Author: Samantha O''Sullivan
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This thesis describes experiments conducted in 3He-B to investigate the properties of quantum turbulence created by an oscillating grid. The turbulence is detected using an array of vibrating wire resonators. We have measured various steady-state properties of the turbulence includ- ing fluctuations, and investigated how turbulence propagates and evolves by examining the correlations between pairs of detectors. The quantum turbu- lence generated in our experiment is found to decay in a way similar to that found in classical fluids, as described by the Richardson cascade.
Author: Andrew Woods
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Martin James Jackson
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher: Elsevier
ISBN: 0080915043
Category : Science
Languages : en
Pages : 433
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Book Description
Progress in Low Temperature Physics: Quantum Turbulence presents seven review articles on the recent developments on quantum turbulence. Turbulence has been a great mystery in natural science and technology for more than 500 years since the time of Leonardo da Vinci. Recently turbulence in quantum systems at low temperatures has developed into a new research field. Quantum turbulence is comprised of quantized vortices, realized in superfluid helium and quantum gases of cold atoms. Some of the important topics include energy spectra, vibrating structures, and visualization techniques. The understanding of these remarkable systems can have an impact on the general field of turbulence and will be of broad interest to scientists and students in low temperature physics, hydrodynamics and engineering. - Key subjects covered: Energy spectra in quantum turbulence, Turbulent dynamics in rotating helium superfluids: a comparison of 3He-B and 4He-II, Quantum turbulence in superfluid 3He at very low temperatures, The use of vibrating structures in the study of quantum turbulence, Visualization of quantum turbulence, Capillary turbulence on the surface of quantum fluids, Quantized vortices in atomic Bose-Einstein condensates - Crucial information for all experimenters in low temperature physics
Author: Carlo F. Barenghi
Publisher: Cambridge University Press
ISBN: 1009345648
Category : Science
Languages : en
Pages : 324
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Book Description
Bringing together two previously distinct strands of physics, this text introduces the interdisciplinary field of quantum turbulence, the realm of quantum fluids and vortices in superfluid helium and atomic Bose–Einstein condensates. Covering state-of-the-art methods and results, it is an essential read for students and seasoned researchers alike.
Author: Rebecca Whitehead
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: William Michael Hayes
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: C.F. Barenghi
Publisher: Springer
ISBN: 3540455426
Category : Technology & Engineering
Languages : en
Pages : 459
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Book Description
This book springs from the programme Quantized Vortex Dynamics and Sup- ?uid Turbulence held at the Isaac Newton Institute for Mathematical Sciences (University of Cambridge) in August 2000. What motivated the programme was the recognition that two recent developments have moved the study of qu- tized vorticity, traditionally carried out within the low-temperature physics and condensed-matter physics communities, into a new era. The ?rst development is the increasing contact with classical ?uid dynamics and its ideas and methods. For example, some current experiments with - lium II now deal with very classical issues, such as the measurement of velocity spectra and turbulence decay rates. The evidence from these experiments and many others is that super?uid turbulence and classical turbulence share many features. The challenge is now to explain these similarities and explore the time scales and length scales over which they hold true. The observed classical aspects have also attracted attention to the role played by the ?ow of the normal ?uid, which was somewhat neglected in the past because of the lack of direct ?ow visualization. Increased computing power is also making it possible to study the coupled motion of super?uid vortices and normal ?uids. Another contact with classical physics arises through the interest in the study of super?uid vortex - connections. Reconnections have been studied for some time in the contexts of classical ?uid dynamics and magneto-hydrodynamics (MHD), and it is useful to learn from the experience acquired in other ?elds.
Author: G. E. Volovik
Publisher: World Scientific
ISBN: 9789810207069
Category : Science
Languages : en
Pages : 244
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Book Description
This book discusses the unique properties of superfluid phases of 3He, the condensed matter with the outmost broken symmetry, which combine in a surprising way the properties of ordered magnets, liquid crystals and superfluids. The complicated vacuum state of these phases with a large number of fermionic and bosonic quasiparticles and topological objects remains the vacuum in modern quantum field theories. Some of the objects and physical phenomena in 3He have strong analogy with the neutrino, W-bosons, weak interactions, gravity, chiral anomaly, Quantum Hall Effect and fractional statistics. As an example of topological objects, the quantized vortices in 3He phases are discussed in detail, including singular and continuous vortices, half-quantum vortices, broken symmetry in the vortex core and phase transitions between the vortex states with different symmetry and topology.
Author: Edouard B. Sonin
Publisher: Cambridge University Press
ISBN: 1316453502
Category : Science
Languages : en
Pages : 405
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Book Description
A comprehensive overview of the basic principles of vortex dynamics in superfluids, this book addresses the problems of vortex dynamics in all three superfluids available in laboratories (4He, 3He, and BEC of cold atoms) alongside discussions of the elasticity of vortices, forces on vortices, and vortex mass. Beginning with a summary of classical hydrodynamics, the book guides the reader through examinations of vortex dynamics from large scales to the microscopic scale. Topics such as vortex arrays in rotating superfluids, bound states in vortex cores and interaction of vortices with quasiparticles are discussed. The final chapter of the book considers implications of vortex dynamics to superfluid turbulence using simple scaling and symmetry arguments. Written from a unified point of view that avoids complicated mathematical approaches, this text is ideal for students and researchers working with vortex dynamics in superfluids, superconductors, magnetically ordered materials, neutron stars and cosmological models.
