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  • 25.70.Lm  (1)
  • PACS. 05.60.Gg Quantum transport – 71.23.An Theories and models; localized states  (1)
  • PACS. 05.60.Gg Quantum transport – 71.23.An Theories and models; localized states – 05.45.Pq Numerical simulations of chaotic models  (1)
  • PACS. 73.23.Ad Ballistic transport - 03.65.Sq Semiclassical theories and applications  (1)
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  • 25.70.Lm  (1)
  • PACS. 05.60.Gg Quantum transport – 71.23.An Theories and models; localized states  (1)
  • PACS. 05.60.Gg Quantum transport – 71.23.An Theories and models; localized states – 05.45.Pq Numerical simulations of chaotic models  (1)
  • PACS. 73.23.Ad Ballistic transport - 03.65.Sq Semiclassical theories and applications  (1)
  • Nuclear reactions  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Transport through cavities with tunnel barriers: a semiclassical analysis (1998)
    Springer
    The European physical journal 3 (1998), S. 387-396 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 73.23.Ad Ballistic transport - 03.65.Sq Semiclassical theories and applications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We study the influence of a tunnel barrier on the quantum transport through a circular cavity. Our analysis in terms of classical trajectories shows that the semiclassical approaches developed for ballistic transport can be adapted to deal with the case where tunneling is present. Peaks in the Fourier transform of the energy-dependent transmission and reflection spectra exhibit a nonmonotonic behaviour as a function of the barrier height in the quantum mechanical numerical calculations. Semiclassical analysis provides a simple qualitative explanation of this behaviour, as well as a quantitative agreement with the exact calculations. The experimental relevance of the classical trajectories in mesoscopic and microwave systems is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510050326
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    From ballistic motion to localization: a phase space analysis (2002)
    Springer
    The European physical journal 27 (2002), S. 11-14 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 05.60.Gg Quantum transport – 71.23.An Theories and models; localized states – 05.45.Pq Numerical simulations of chaotic models
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We introduce phase space concepts to describe quantum states in a disordered system. The merits of an inverse participation ratio defined on the basis of the Husimi function are demonstrated by a numerical study of the Anderson model in one, two, and three dimensions. Contrary to the inverse participation ratios in real and momentum space, the corresponding phase space quantity allows for a distinction between the ballistic, diffusive, and localized regimes on a unique footing and provides valuable insight into the structure of the eigenstates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e20020125
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Inclusive excitation-energy distributions of hot nuclei from 44 MeV/nucleon Ar- and 32 MeV/nucleon Kr-induced reactions (1993)
    Springer
    The European physical journal 346 (1993), S. 201-208 
    Details
    ISSN: 1434-601X
    Keywords: 25.70.Gh ; 25.70.Lm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Inclusive neutron multiplicity distributions were measured by means of 4π liquid-scintillator detectors for Ar and Kr-induced reactions at 44 MeV/nucleon and 32 MeV/nucleon, respectively. For all the systems studied, the observed distributions exhibit a bump structure at large multiplicity, corresponding to highly dissipative collisions. For Ar-induced reactions, the excitation energies necessary to explain the most probable neutron multiplicity associated with these dissipative collisions are estimated, the correspondence between excitation energy and neutron multiplicity being calculated in the framework of the statistical model. The so-obtained values of excitation energies, which are systematically lower than those predicted using the massive-transfer picture, are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01306080
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Delocalization and Heisenberg's uncertainty relation (2002)
    Springer
    The European physical journal 30 (2002), S. 175-179 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 05.60.Gg Quantum transport – 71.23.An Theories and models; localized states
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: In the one-dimensional Anderson model the eigenstates are localized for arbitrarily small amounts of disorder. In contrast, the Aubry-André model with its quasiperiodic potential shows a transition from extended to localized states. The difference between the two models becomes particularly apparent in phase space where Heisenberg's uncertainty relation imposes a finite resolution. Our analysis points to the relevance of the coupling between momentum eigenstates at weak potential strength for the delocalization of a quantum particle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e2002-00372-9
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    Paper (German National Licenses)
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