rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Many-Body Schrödinger Dynamics of Bose-Einstein Condensates
  name:
    name part: Sakmann, Kaspar.
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: SpringerLink (Online service)
  type of resource: text
  origin info:
    place:
      place term: gw
    date issued: 2011
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: electronic
    form: electronic resource
    reformatting quality: access
    form: remote
    extent: XII, 132 p. online resource.
  abstract: 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.
  table of contents: General Theory -- General Methods for the Quantum Dynamics of Identical Bosons -- Lattice Models for the Quantum Dynamics of Identical Bosons.- Reduced Density Matrices and Coherence of Trapped Interacting Bosons -- Exact Quantum Dynamics of a Bosonic Josephson Junction -- Quantum Dynamics of Attractive vs. Repulsive Bosonic Josephson Junctions: Bose-Hubbard and full-Hamiltonian Results -- Optimal Time-Dependent Lattice Models for Nonequilibrium Dynamics.-Final Remarks and Outlook.-Appendices.
  note: by Kaspar Sakmann.
  subject:
    topic: Physics
  subject:
    topic: Phase transformations (Statistical physics)
  subject:
    topic: Condensed materials
  subject:
    topic: Condensed matter
  subject:
    topic: Superconductivity
  subject:
    topic: Superconductors
  subject:
    topic: Physics
  subject:
    topic: Quantum Gases and Condensates
  subject:
    topic: Theoretical, Mathematical and Computational Physics
  subject:
    topic: Strongly Correlated Systems, Superconductivity
  classification: QC175.16.C6
  classification: 539
  related item:
    title info:
      title: Springer eBooks
  related item:
    title info:
      title: Springer Theses
  identifier: 9783642228667
  identifier: http://dx.doi.org/10.1007/978-3-642-22866-7
  record info:
    record creation date: 110830
    record change date: 20151204153549.0
    record identifier: 978-3-642-22866-7