Jet-Induced Gauge Field Instabilities in the Quark-Gluon Plasma(RHIC Phenomenology/Theory,New Frontiers in QCD 2008-Fundamental Problems in Hot and/or Dense Matter-)
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概要
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We discuss the properties of the collective modes of a system composed by a thermalized quark-gluon plasma traversed by a relativistic jet of partons. The transport equations obeyed by the components of the plasma and of the jet are studied in the Vlasov approximation. Assuming that the partons in the jet can be described with a tsunami-like distribution function we derive the expressions of the dispersion law of the collective modes. Then the behavior of the unstable gauge modes of the system is analyzed for various values of the velocity of the jet, of the momentum of the collective modes and of the angle between these two quantities. We find that the most unstable modes are those with momentum orthogonal to the velocity of the jet, and the effect is stronger for ultrarelativistic jet velocities. Our results suggest a new possible collective mechanism for the description of the jet quenching phenomena in heavy ion collisions.
- 理論物理学刊行会の論文
- 2008-10-15
著者
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Mannarelli Massimo
Instituto De Ciencias Del Espacio (ieec Csic) Campus Universitat Autonoma De Barcelona Facultat De C
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MANUEL Cristina
Instituto de Ciencias del Espacio (IEEC CSIC), Campus Universitat Autonoma de Barcelona, Facultat de
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Manuel Cristina
Instituto De Ciencias Del Espacio (ieec Csic) Campus Universitat Autonoma De Barcelona Facultat De C
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MANUEL Cristina
Instituto de Ciencias del Espacio (IEEC CSIC), Campus Universitat Autonoma de Barcelona, Facultat de Ciencies
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Mannarelli Massimo
Instituto de Ciencias del Espacio (IEEC CSIC), Campus Universitat Autonoma de Barcelona, Facultat de Ciencies