变质量粒子系统的统计热力学公式

Thermodynamics with variable particle mass

利用系综理论的一般原理 ,我们推导了变质量粒子系统的统计热力学公式。我们发现 ,由于粒子的质量跟密度相关 ,压强的表达式中将比通常的形式多出一项。然而 ,该项并不在能量的表达式中出现。应用新的热力学公式 ,我们计算奇异夸克物质的态方程 。

On application of the general ensemble theory,we have derived the thermodynamic formulas for systems with variable particle mass.Because of the mass density dependence,there is an extra term in the expression of pressure.However,the extra term does not appear in that of energy.With the new formulas obtained,we have also calculated the equation of state for strange quark matter with reasonable results.