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  • Articles: DFG German National Licenses  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Atomic physics The social life of atoms (2007)
    [s.l.] : Nature Publishing Group
    Nature 445 (2007), S. 372-375 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Counting individual quantum-mechanical objects such as the particles of a complex many-body system — whether photons, electrons, atoms or something else — is an efficient way to learn about the properties of both the system and of the particles being counted. Fifty years ago, Robert ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/445372a
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Renormalization group and high-temperature series for the two-dimensional ising model (1984)
    Springer
    The European physical journal 54 (1984), S. 333-350 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We employ high-temperature series to investigate a two-parameter class of renormalization group transformations for the two-dimensional Ising model on the triangular lattice. For the static case we identify an optimal organization of the high-temperature expansion and an optimal transformation matrix and thus find, in second order, ν=0.96 and the magnetic eigenvaluey=2-η/2=1.76. From recursion relations for flip rates we find the dynamic exponent to be the same for all transformations in our two-parameter class,z=2.32. Our fixed-point flip rates do not describe a Markov process even though the corresponding master equation for the single-event probability displays no explicit memory effects. The non-Markovian nature shows up only in a violation of the Markovian detailed balance conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01485831
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The irrelevance of detailed balance for the dynamical critical exponent (1984)
    Springer
    The European physical journal 55 (1984), S. 211-218 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We construct the most general real space renormalization for the two-dimensional kinetic Ising model on the triangular lattice which, to second order in the high-temperature expansion, conserves detailed balance and avoids fast transients for the cell spins. We show the corresponding dynamical recursion relations (as well as the exponentz) to be unaltered with respect to the ones found, in a previous paper, for a completely different class of transformations. This finding resolves long-standing confusions and controversies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01329013
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Fluctuations in the nonlinear regime of stimulated Raman scattering (1984)
    Springer
    The European physical journal 56 (1984), S. 69-75 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We investigate the distribution of Stokes pulse energies in the transient nonlinear regime of stimulated Raman scattering. Nonlinear effects lead to a stabilization of Stokes pulse energies. The character of the transition from the chaotic linear regime to the nonlinear regime is studied in detail. The results compare nicely with recent experiments of Walmsey and Raymer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01470214
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    Paper (German National Licenses)
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