Screening effects in relativistic models of dense matter at finite temperature
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Screening effects in relativistic models of dense matter at finite temperature

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Screening effects in relativistic models of dense matter at finite temperature

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dc.contributor.author Sivak, Horacio D.
dc.contributor.author Pérez Cañellas, Armando
dc.contributor.author Díaz Alonso, Joaquín
dc.date.accessioned 2014-02-19T16:10:30Z
dc.date.available 2014-02-19T16:10:30Z
dc.date.issued 2001
dc.identifier.uri http://dx.doi.org/10.1143/PTP.105.961
dc.identifier.uri http://hdl.handle.net/10550/33101
dc.description.abstract We investigate the analytic structure of the one-loop boson propagator at finite density and temperature in hadronic and QCD plasmas. The appearance of poles in the complex wave-vector plane dramatically modifies the form of the screened static potential of 'charges' in the medium, which substantially differs from the standard Debye form. In fact, at T = 0, within a wide range of distance, the potential for two interacting particles is dominated by the pole contribution, which leads to an oscillatory and exponentially damped form (Yukawa oscillations). For the long range, the form of the potential is dominated by the Kohn singularity, which induces oscillatory behavior and is damped as a power-law of the distance (Friedel oscillations). We discuss the evolution of the pole, as the density and temperature change, for the two types of plasmas we have analyzed. In both cases, these phenomena have important consequences when analyzing the in-medium interaction.
dc.relation.ispartof Progress of Theoretical Physics, 2001, vol. 105, num. 6, p. 961-978
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Sivak, Horacio D. Pérez Cañellas, Armando Díaz Alonso, Joaquín 2001 Screening effects in relativistic models of dense matter at finite temperature Progress of Theoretical Physics 105 6 961 978
dc.subject Física
dc.title Screening effects in relativistic models of dense matter at finite temperature
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-02-19T16:10:30Z
dc.identifier.doi http://dx.doi.org/10.1143/PTP.105.961
dc.identifier.idgrec 093313

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