arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1005.0860nucl-th
收藏

手征临界点附近的位相涨落

Phase Fluctuations near the Chiral Critical Point

Joseph Kapusta

摘要:

在QCD手征临界点附近,Helmholtz自由能量密度被参数化为温度和重子密度的函数。参数化结合了预期的临界指数和振幅。用朗道理论实现了远离平衡态的展开。这是用来计算系统在平衡密度以外的密度下被发现的概率。在重离子碰撞中,这种涨落被预言是非常大的。

英文摘要:

The Helmholtz free energy density is parametrized as a function of temperature and baryon density near the chiral critical point of QCD. The parametrization incorporates the expected critical exponents and amplitudes. An expansion away from equilibrium states is achieved with Landau theory. This is used to calculate the probability that the system is found at a density other than the equilibrium one. Such fluctuations are predicted to be very large in heavy ion collisions.

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。

↑