News from Lattice QCD on Heavy Quark Potentials and Spectral Functions of Heavy Quark States

News from Lattice QCD on Heavy Quark Potentials and Spectral Functions of Heavy Quark States
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来自格子 QCD 的关于重夸克势和重夸克态谱函数的新闻

DOI:
10.1088/0954-3899/30/8/030
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发表时间:
2004
期刊:
Journal of Physics G
影响因子:
--
通讯作者:
F. Karsch
F. Karsch
中科院分区:
--
文献类型:
--
作者:
F. Karsch

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我们讨论了最近关于强子介子性质的晶格结果,并重点讨论了重夸克束缚态的热性质。我们将阐明重夸克自由能与用于分析重夸克束缚态熔化的势之间的关系。此外,我们还给出了介子谱函数的计算,结果表明,在夸克-胶子等离子体中,碳原子的基态J/ψ和ηc作为明确的共振存在,它们的零温质量至少在T1.5℃以下没有明显的变化。对非零重子数密度下晶格计算的现状也作了简要评述。
We discuss recent lattice results on in-medium properties of hadrons and focus on thermal properties of heavy quark bound states. We will clarify the relation between heavy quark free energies and potentials used to analyse the melting of heavy quark bound states. Furthermore, we present calculations of meson spectral functions which indicate that the charmonium ground states, J/ψ and ηc, persist in the quark–gluon plasma as well-defined resonances with no significant change of their zero-temperature masses at least up to T 1.5Tc. We also briefly comment on the current status of lattice calculations at non-vanishing baryon number density.
DOI: --
发表时间: 1997
期刊: --
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作者:
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