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arXiv 0706.2697hep-phnucl-th
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手征凝聚体在相变附近的涨落和准粒子谱

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

Yukio Nemoto, Masakiyo Kitazawa, Teiji Kunihiro

摘要:

我们研究了在手征跃迁临界温度附近但高于此温度的夸克谱,并考虑了非对称软模。结果表明,在实验中出现了新的准夸克和准反夸克的激发谱,具有三峰结构。利用Yukawa模型对三峰结构的形成进行了详细的分析,结果表明新的夸克谱是由准夸克与软模的共振散射引起的夸克(反夸克)和反夸克空穴(夸克空穴)的混合产生的,软模的激发能小而有限,在临界温度附近具有很小的宽度.

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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