arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1102.2327nucl-thhep-ph
收藏

夸克-强子模型中的热密物质

Hot and dense matter in quark-hadron models

S. Schramm, J. Steinheimer

摘要:

我们提出了一个一般的方法,将强子以及夸克自由度在一个统一的方法。这种方法实现了在高以及低温度和密度下的正确自由度。一个有效的Polyakov回路场作为解禁闭的序参量。我们采用了一个基于手征对称公式的强子味SU(3)模型,该模型再现了基态核物质的性质,并对核和超核进行了很好的描述。排除体积效应模拟强子的有限大小驱动在高温和高密度下向夸克的转变。我们研究了该模型的相结构和过渡到夸克-胶子等离子体和比较结果的格点规范计算。

英文摘要:

We present a general approach to incorporate hadronic as well as quark degrees of freedom in a unified approach. This approach implements the correct degrees of freedom at high as well as low temperatures and densities. An effective Polyakov loop field serves as the order parameter for deconfinement. We employ a well-tested hadronic flavor-SU(3) model based on a chirally symmetric formulation that reproduces properties of ground state nuclear matter and yields good descriptions of nuclei and hypernuclei. Excluded volume effects simulating the finite size of the hadrons drive the transition to quarks at high temperatures and densities. We study the phase structure of the model and the transition to the quark gluon plasma and compare results to lattice gauge calculations.

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。

↑