Vector Solitons and Different Scenarios of Universal Dynamics in a Spin-1 Bose-Einstein Condensate
Author : Stefan Lannig
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Page : 0 pages
File Size : 24,54 MB
Release : 2022
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Author : Stefan Lannig
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Page : 0 pages
File Size : 24,54 MB
Release : 2022
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Author : Felix Schmidt
Publisher :
Page : pages
File Size : 38,8 MB
Release : 2019
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ISBN : 9783843939287
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Page : 264 pages
File Size : 32,14 MB
Release : 2008
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Phase transitions abound in the physical world, from the subatomic length scales of quark condensation to the decoupling forces in the early universe. In the Bose-Einstein condensation phase transition, a gas of trapped bosonic atoms is cooled to a critical temperature. Below this temperature, a macroscopic number of atoms suddenly starts to occupy a single quantum state; these atoms comprise the Bose-Einstein condensate (BEC). The dynamics of the BEC phase transition are the focus of this dissertation and the experiments described here have provided new information on the details of BEC formation. New theoretical developments are proving to be valuable tools for describing BEC phase transition dynamics and interpreting new experimental results. With their amenability to optical manipulation and probing along with the advent of new microscopic theories, BECs provide an important new avenue for gaining insight into the universal dynamics of phase transitions in general. Spontaneous symmetry breaking in the system's order parameter may be one result of cooling through a phase transition. A potential consequence of this is the spontaneous formation of topological defects, which in a BEC appear as vortices. We experimentally observed and characterized the spontaneous formation of vortices during BEC growth. We attribute vortex creation tocoherence length limitations during the initial stages of the phase transition. Parallel to these experimental observations, theory collaborators have used the Stochastic Gross-Pitaevski Equation formalism to simulate the growth of a condensate from a thermal cloud. The experimental and theoretical statistical results of the spontaneous formation of vortex cores during the growth of the condensate are in good quantitative agreement with one another, supporting our understanding of the dynamics of the phase transition. We believe that our results are also qualitatively consistent with the Kibble-Zurek mechanism, a universal model for topological defect formation. Ultimately, our understanding of the dynamics of the BEC phase transition may lead to a broader understanding of phase transitions in general, and provide new insight into the development of coherence in numerous systems.
Author : Callum Lewis Grimshaw
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Page : pages
File Size : 43,40 MB
Release : 2021
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Author : Andreas Weller
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Page : 0 pages
File Size : 49,64 MB
Release : 2009
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Author : Uttam Man Shrestha
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Page : 282 pages
File Size : 13,89 MB
Release : 2009
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Author : Thierry Dauxois
Publisher : Cambridge University Press
Page : 435 pages
File Size : 27,93 MB
Release : 2006-03-09
Category : Mathematics
ISBN : 0521854210
This textbook gives an instructive view of solitons and their applications for advanced students of physics.
Author : İlkay Bakırtaş
Publisher : BoD – Books on Demand
Page : 260 pages
File Size : 29,30 MB
Release : 2021-01-27
Category : Science
ISBN : 1839626518
With this book, we aim to capture different perspectives of researchers on nonlinear optics and optical devices and we intend to cover the latest developments in optics from theoretical, numerical, and experimental aspects. The eleven selected chapters cover a variety of topics related to nonlinear optics including bright, dark, kink solitary waves in various media, magnetic solitons, lattice solitons, rogue-waves, solid-state lasers, laser cladding, optical sensors, optical vortices, and molecular switches. The book is intended to draw the attention of scientists in academia, as well as researchers and engineers in industry, since the field has a significant potential for the production and design of novel optical devices and other technological applications.
Author : Lev. P. Pitaevskii
Publisher : Oxford University Press
Page : 392 pages
File Size : 48,81 MB
Release : 2003-04-03
Category : Science
ISBN : 9780198507192
Bose-Einstein Condensation represents a new state of matter and is one of the cornerstones of quantum physics, resulting in the 2001 Nobel Prize. Providing a useful introduction to one of the most exciting field of physics today, this text will be of interest to a growing community of physicists, and is easily accessible to non-specialists alike.
Author : Alexander Altland
Publisher : Cambridge University Press
Page : 785 pages
File Size : 15,87 MB
Release : 2010-03-11
Category : Science
ISBN : 0521769752
This primer is aimed at elevating graduate students of condensed matter theory to a level where they can engage in independent research. Topics covered include second quantisation, path and functional field integration, mean-field theory and collective phenomena.