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  • Electronic Resource  (3)
  • 2000-2004  (3)
  • 1945-1949
  • 1925-1929
  • 1920-1924
  • 2002  (3)
  • 1929
  • PACS. 75.50.Lk Spin glasses and other random magnets – 05.70.Fh Phase transitions: general studies – 64.70.Pf Glass transitions  (2)
  • PACS. 01.80.+b Physics of sports – 02.50.-r Probability theory, stochastic processes, and statistics  (1)
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  • Electronic Resource  (3)
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  • 2000-2004  (3)
  • 1945-1949
  • 1925-1929
  • 1920-1924
Year
  • 2002  (3)
  • 1929
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  • 1
    Electronic Resource
    Electronic Resource
    Statistical test of throwing events on the rotating Earth (2002)
    Springer
    The European physical journal 30 (2002), S. 411-415 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 01.80.+b Physics of sports – 02.50.-r Probability theory, stochastic processes, and statistics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: In a recent paper, Mizera and Horváth computed the effects of environmental factors on shot put and hammer throw ranges [J. Biomech. 35, (2002) 785-796]. They found that the geographic location (latitude and altitude) influences throwing distances as strongly as meteorological conditions (wind and air density). Considering the small differences in record-breaking results, they proposed that normalization to a reference stadium should be introduced. Here we attempt to detect possible correlations between geographic location and throwing ranges by using all-time best result lists. Unfortunately the separation of the effects of different environmental factors is not possible, simply because they are not documented. Our tests failed to find the expected correlation. We conclude that the variance of human factors seems to dominate, thus any correction of measured results is probably unnecessary.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e2002-00397-0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Deviations from perfect memory in spin glass temperature cycling experiments (2002)
    Springer
    The European physical journal 29 (2002), S. 469-479 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 75.50.Lk Spin glasses and other random magnets – 05.70.Fh Phase transitions: general studies – 64.70.Pf Glass transitions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We study the deviations from perfect memory in negative temperature cycle spin glass experiments. It is known that the a.c. susceptibility after the temperature is raised back to its initial value is superimposed to the reference isothermal curve for large enough temperature jumps ΔT (perfect memory). For smaller ΔT, the deviation from this perfect memory has a striking non monotonous behavior: the `memory anomaly' is negative for small ΔT's, becomes positive for intermediate ΔT's, before vanishing for still larger ΔT's. We show that this interesting behavior can be reproduced by simple Random Energy trap models. We discuss an alternative interpretation in terms of droplets and temperature chaos.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e2002-00327-2
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Chaotic temperature dependence in a model of spin glasses (2002)
    Springer
    The European physical journal 28 (2002), S. 199-208 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 75.50.Lk Spin glasses and other random magnets – 05.70.Fh Phase transitions: general studies – 64.70.Pf Glass transitions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We address the problem of chaotic temperature dependence in disordered glassy systems at equilibrium by following states of a random-energy random-entropy model in temperature; of particular interest are the crossings of the free-energies of these states. We find that this model exhibits strong, weak or no temperature chaos depending on the value of an exponent. This allows us to write a general criterion for temperature chaos in disordered systems, predicting the presence of temperature chaos in the Sherrington-Kirkpatrick and Edwards-Anderson spin glass models, albeit when the number of spins is large enough. The absence of chaos for smaller systems may justify why it is difficult to observe chaos with current simulations. We also illustrate our findings by studying temperature chaos in the naıve mean field equations for the Edwards-Anderson spin glass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e2002-00221-y
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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