Title Many-Body Schr??dinger Dynamics of Bose-Einstein Condensates Author(s) Sakmann, Kaspar Publication Berlin, Heidelberg, Springer Berlin Heidelberg, 2011. Description XII, 132 p : online resource Abstract Note 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 Schr??dinger 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 Schr??dinger 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 ISBN,Price 9783642228667 Keyword(s) 1. Condensed materials 2. EBOOK 3. EBOOK - SPRINGER 4. MATHEMATICAL PHYSICS 5. Phase transformations (Statistical physics) 6. Quantum Gases and Condensates 7. Strongly Correlated Systems, Superconductivity 8. SUPERCONDUCTIVITY 9. SUPERCONDUCTORS 10. Theoretical, Mathematical and Computational Physics Item Type eBook Multi-Media Links Please Click here for eBook Circulation Data Accession#   Call# Status Issued To Return Due On Physical Location I07226     On Shelf