Fluctuations, strangeness, and quasiquarks in heavy-ion collisions from lattice QCD
Fluctuations, strangeness, and quasiquarks in heavy-ion collisions from lattice QCD
复制标题
DOI：
10.1103/physrevd.73.014004
复制
发表时间：
2005-10
影响因子：
5
通讯作者：
R. Gavai;Sourendu Gupta
中科院分区：
文献类型：
--
作者：
R. Gavai;Sourendu Gupta
我们报告了重子数 ${\ensuremath{\chi}}_{B}$、电荷 ${\ensuremath{\chi}}_{Q}$、同位旋第三个分量 ${\ensuremath{\chi}}_{I}$、奇异值 ${\ensuremath{\chi}}_{S}$ 和超电荷的对角磁化率的测量， ${\ensuremath{\chi}}_{Y}$，以及非对角线 ${\ensuremath{\chi}}_{BQ}$、${\ensuremath{\chi}}_{BY}$、${\ensuremath{\chi}}_{BS}$ 等。我们证明高温相磁化率的比率是鲁棒变量，与晶格间距无关，因此给出了预测用于实验。我们还研究了有限温度下奇怪的产生和风味对称性破坏矩阵元素。最后，我们提出的证据表明，在 QCD 的高温阶段，不同味道的量子数在联系中被激发，这与人们对夸克的预期完全相同。我们提出了对这些类夸克准粒子的一些研究。
We report measurements of diagonal susceptibilities for the baryon number, ${\ensuremath{\chi}}_{B}$, electrical charge, ${\ensuremath{\chi}}_{Q}$, third component of isospin, ${\ensuremath{\chi}}_{I}$, strangeness, ${\ensuremath{\chi}}_{S}$, and hypercharge, ${\ensuremath{\chi}}_{Y}$, as well as the off-diagonal ${\ensuremath{\chi}}_{BQ}$, ${\ensuremath{\chi}}_{BY}$, ${\ensuremath{\chi}}_{BS}$, etc. We show that the ratios of susceptibilities in the high-temperature phase are robust variables, independent of lattice spacing, and therefore give predictions for experiments. We also investigate strangeness production and flavor symmetry breaking matrix elements at finite temperature. Finally, we present evidence that in the high-temperature phase of QCD the different flavor quantum numbers are excited in linkages which are exactly the same as one expects from quarks. We present some investigations of these quarklike quasiparticles.