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Tunneling dynamics in open ultracold...

Lode, Axel U. J.

Tunneling dynamics in open ultracold bosonic systemsnumerically exact dynamics, analytical models, and control schemes /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Tunneling dynamics in open ultracold bosonic systemsby Axel U. J. Lode.
其他題名:	numerically exact dynamics, analytical models, and control schemes /
作者:	Lode, Axel U. J.
出版者:	Cham :Springer International Publishing :2015.
面頁冊數:	xix, 139 p. :ill., digital ;24 cm.
Contained By:	Springer eBooks
標題:	Tunneling (Physics)
電子資源:	http://dx.doi.org/10.1007/978-3-319-07085-8
ISBN:	9783319070858 (electronic bk.)

Tunneling dynamics in open ultracold bosonic systemsnumerically exact dynamics, analytical models, and control schemes /
Lode, Axel U. J.

Tunneling dynamics in open ultracold bosonic systemsnumerically exact dynamics, analytical models, and control schemes /[electronic resource] :by Axel U. J. Lode. - Cham :Springer International Publishing :2015. - xix, 139 p. :ill., digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

Introduction -- Theory and Methods -- Benchmarks with Analytically Solvable Problems -- A Case Study with an attractive BEC: Comparison of Lattice and Continuous Space Theories -- Theoretical Considerations and Analytical Models on the Many-Body Physics of Tunneling Bosons -- Many-Boson Tunneling without a Threshold -- Many-Boson Tunneling with a Threshold -- Final Remarks.

This thesis addresses the intriguing topic of the quantum tunnelling of many-body systems such as Bose-Einstein condensates. Despite the enormous amount of work on the tunneling of a single particle through a barrier, we know very little about how a system made of several or of many particles tunnels through a barrier to open space. The present' work uses numerically exact solutions of the time-dependent many-boson Schrodinger equation to explore the rich physics of the tunneling to open space process in ultracold bosonic particles that are initially prepared as a Bose-Einstein condensate and subsequently allowed to tunnel through a barrier to open space. The many-body process is built up from concurrently occurring single particle processes that are characterized by different momenta. These momenta correspond to the chemical potentials of systems with decreasing particle number. The many-boson process exhibits exciting collective phenomena: the escaping particles fragment and lose their coherence with the source and among each other, whilst correlations build up within the system. The detailed understanding of the many-body process is used to devise and test a scheme to control the final state, momentum distributions and even the correlation dynamics of the tunneling process.

ISBN: 9783319070858 (electronic bk.)

Standard No.: 10.1007/978-3-319-07085-8doiSubjects--Topical Terms:

228326
Tunneling (Physics)

LC Class. No.: QC176.8.T8

Dewey Class. No.: 530.416

Tunneling dynamics in open ultracold bosonic systemsnumerically exact dynamics, analytical models, and control schemes /
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520 $a This thesis addresses the intriguing topic of the quantum tunnelling of many-body systems such as Bose-Einstein condensates. Despite the enormous amount of work on the tunneling of a single particle through a barrier, we know very little about how a system made of several or of many particles tunnels through a barrier to open space. The present' work uses numerically exact solutions of the time-dependent many-boson Schrodinger equation to explore the rich physics of the tunneling to open space process in ultracold bosonic particles that are initially prepared as a Bose-Einstein condensate and subsequently allowed to tunnel through a barrier to open space. The many-body process is built up from concurrently occurring single particle processes that are characterized by different momenta. These momenta correspond to the chemical potentials of systems with decreasing particle number. The many-boson process exhibits exciting collective phenomena: the escaping particles fragment and lose their coherence with the source and among each other, whilst correlations build up within the system. The detailed understanding of the many-body process is used to devise and test a scheme to control the final state, momentum distributions and even the correlation dynamics of the tunneling process.
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