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  • 1
    Electronic Resource
    Electronic Resource
    Non-differentiability of the effective potential
    Amsterdam : Elsevier
    Nuclear Physics, Section B 406 (1993), S. 808-822 
    Details
    ISSN: 0550-3213
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0550-3213(93)90011-D
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Yano-Koonin-Podgoretskii parametrisation of the Hanbury Brown-Twiss correlator (1998)
    Springer
    The European physical journal 1 (1998), S. 599-617 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: The Yano-Koonin-Podgoretskii (YKP) parametrisation of Hanbury Brown-Twiss (HBT) two-particle correlation functions opens new strategies for extracting the emission duration and testing the longitudinal expansion in heavy-ion collisions. Based on the recently derived model-independent expressions, we present a detailed parameter study of the YKP parameters for a finite, hydrodynamically expanding source model of heavy-ion collisions. For the class of models studied here, we show that the three YKP radius parameters have an interpretation as longitudinal extension, transverse extension and emission duration of the source in the YKP frame. This frame is specified by the fourth fit parameter, the Yano-Koonin velocity which describes to a good approximation the velocity of the fluid element with highest emissivity and allows to test for the longitudinal expansion of the source. Deviations from this interpretation of the YKP parameters are discussed quantitatively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100520050109
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    An inconsistency in the simulation of Bose-Einstein correlations (1998)
    Springer
    The European physical journal 2 (1998), S. 359-364 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. We show that the formalism commonly used to implement Bose-Einstein correlations in Monte-Carlo simulations can lead to values of the two-particle correlator significantly smaller than unity, in the case of sources with strong position-momentum correlations. This is more pronounced when the phase space of the emitted particles is strongly reduced by experimental acceptance or kinematic analysis selections. It is inconsistent with general principles from the coherent state formalism according to which the Bose-Einstein correlator is larger than unity. This inconsistency seems to be rooted in the fact that quantum mechanical localization properties are not taken into account properly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100520050146
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    Paper (German National Licenses)
    Fulltext
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