Fluctuations of the chiral condensate and quasi-particle spectra near phase transition

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We investigate the quark spectrum near but above the critical temperature of the chiral transition, taking into account the precursory soft modes. It is found that there appear novel excitation spectra of quasi-quarks and quasi-antiquarks with a three-peak structure. By a detailed analysis on the formation of the three-peak structure using Yukawa models, it is shown that the new quark spectra originate from the mixing between a quark (anti-quark) and an antiquark hole (quark hole) caused by a resonant scattering of the quasi-quark with the soft modes which have a small but finite excitation energy with a small width near the critical temperature.
10 pages, 5 figures, talk given at Mini-Workshop on ``Strongly Coupled Quark-Gluon Plasma: SPS, RHIC and LHC", Nagoya, Japan, 16-18 Feb. 2007

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High Energy Physics - Phenomenology, Nuclear Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/131985

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0706.2697
 http://arxiv.org/abs/0706.2697

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arXiv