Authors:
- A new theoretical approach to understanding the dynamics of Bose-Einstein condensates
- Develops optimized models that are shown to perform better than conventional models
- Nominated as an outstanding contribution by the University of Heidelberg
Part of the book series: Springer Theses (Springer Theses)
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Table of contents (9 chapters)
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Front Matter
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Back Matter
About this book
At extremely low temperatures, clouds of bosonic atoms form what is known as a Bose-Einstein condensate. Recently, it has become clear that many different types of condensates -- so called fragmented condensates -- exist. In order to tell whether fragmentation occurs or not, it is necessary to solve the full many-body Schrödinger equation, a task that remained elusive for experimentally relevant conditions for many years. In this thesis the first numerically exact solutions of the time-dependent many-body Schrödinger equation for a bosonic Josephson junction are provided and compared to the approximate Gross-Pitaevskii and Bose-Hubbard theories. It is thereby shown that the dynamics of Bose-Einstein condensates is far more intricate than one would anticipate based on these approximations. A special conceptual innovation in this thesis are optimal lattice models. It is shown how all quantum lattice models of condensed matter physics that are based on Wannier functions, e.g. the Bose/Fermi Hubbard model, can be optimized variationally. This leads to exciting new physics.
Reviews
From the reviews:
“The work under the present review is a doctoral thesis of the well-known Heidelberg University. The topic treated in the 130-page thesis is of great value with several respects. … Final remarks and outlook complete the thesis together with 6 useful appendices. In addition to extensive references at the end of the first 8 chapters there is a brief bibliography and the Scholar’s biography. Colourful figures are very interesting and informative, indeed.” (Paninjukunnath Achuthan, Zentralblatt MATH, Vol. 1233, 2012)Authors and Affiliations
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, Theoretical Chemistry Group, Institute of Physical Chemistry, Heidelberg, Germany
Kaspar Sakmann
Bibliographic Information
Book Title: Many-Body Schrödinger Dynamics of Bose-Einstein Condensates
Authors: Kaspar Sakmann
Series Title: Springer Theses
DOI: https://doi.org/10.1007/978-3-642-22866-7
Publisher: Springer Berlin, Heidelberg
eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)
Copyright Information: Springer-Verlag Berlin Heidelberg 2011
Hardcover ISBN: 978-3-642-22865-0Published: 01 September 2011
Softcover ISBN: 978-3-642-27105-2Published: 27 November 2013
eBook ISBN: 978-3-642-22866-7Published: 31 August 2011
Series ISSN: 2190-5053
Series E-ISSN: 2190-5061
Edition Number: 1
Number of Pages: XII, 132
Topics: Quantum Gases and Condensates, Theoretical, Mathematical and Computational Physics, Strongly Correlated Systems, Superconductivity