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arXiv 2112.07563nucl-thhep-ph
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在强子-夸克-胶子交叉状态方程中嵌入临界点

Embedding a critical point in a hadron to quark-gluon crossover equation of state

J. I. Kapusta, C. Plumberg, T. Welle

摘要:

格点量子色动力学模拟已经明确地表明,当重子化学势为零或很小时,从强子到夸克和胶子的跃迁是一个交叉。许多模型计算预测存在一个临界点的化学势值,目前的晶格模拟是不可靠的。我们展示了如何嵌入一个临界点在一个光滑的背景状态方程,以便产生的临界指数和临界振幅比预期的过渡在同一普适类的液体-气体相变和三维伊辛模型。所得到的状态方程的参数,可以推断出的流体动力学模型的重离子碰撞在束能量扫描II在相对论重离子对撞机或在其他加速器的实验。

英文摘要:

Lattice QCD simulations have shown unequivocally that the transition from hadrons to quarks and gluons is a crossover when the baryon chemical potential is zero or small. Many model calculations predict the existence of a critical point at a value of the chemical potential where current lattice simulations are unreliable. We show how to embed a critical point in a smooth background equation of state so as to yield the critical exponents and critical amplitude ratios expected of a transition in the same universality class as the liquid-gas phase transition and the 3D Ising model. The resulting equation of state has parameters which may be inferred by hydrodynamic modeling of heavy ion collisions in the Beam Energy Scan II at the Relativistic Heavy Ion Collider or in experiments at other accelerators.

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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