通过线性化量子流体动力学模型(Quantum hydrodynamic model QHD),探究了黏滞效应对带电粒子与双层二维电子气相互作用过程的影响。与Poisson方程相结合,推导出电子气密度、感应电势、阻止力和侧向力积分表达式。模拟结果表明,在入射粒...通过线性化量子流体动力学模型(Quantum hydrodynamic model QHD),探究了黏滞效应对带电粒子与双层二维电子气相互作用过程的影响。与Poisson方程相结合,推导出电子气密度、感应电势、阻止力和侧向力积分表达式。模拟结果表明,在入射粒子速度一定时,随着黏滞系数的增大,2个平面内的电子气密度振荡的区域和幅值均变小。此外,对于阻止力随速度的变化情况,在速度小于波尔速度时,黏滞效应使阻止力变大,在速度较高时却使阻止力变小。对于侧向力,在速度较低区域,黏滞系数越大,侧向力越小,当速度增大到波尔速度的1.5倍时,黏滞效应对侧向力的影响逐渐消失。展开更多
From the Lagrangian density of QHD-I model, we study the properties of hot and dense nuclear matter when the zero-point correction is considered and find that the influence of zero-point correction is very important a...From the Lagrangian density of QHD-I model, we study the properties of hot and dense nuclear matter when the zero-point correction is considered and find that the influence of zero-point correction is very important at high temperature.展开更多
Starting from the QHD-I model, the nucleon-nucleon interaction potential in hot/dense nuclear matter is studied. We find that the attractive and repulsive Yukawa potential between nucleons is modified by the variation...Starting from the QHD-I model, the nucleon-nucleon interaction potential in hot/dense nuclear matter is studied. We find that the attractive and repulsive Yukawa potential between nucleons is modified by the variation of Debye mass directly and, especially, the nucleon system described by this Yukawa potential will be unbounded at some critical T and μ. The critical point we get accords with that of L-G phase transition given by the P - pB phase diagram.展开更多
文摘通过线性化量子流体动力学模型(Quantum hydrodynamic model QHD),探究了黏滞效应对带电粒子与双层二维电子气相互作用过程的影响。与Poisson方程相结合,推导出电子气密度、感应电势、阻止力和侧向力积分表达式。模拟结果表明,在入射粒子速度一定时,随着黏滞系数的增大,2个平面内的电子气密度振荡的区域和幅值均变小。此外,对于阻止力随速度的变化情况,在速度小于波尔速度时,黏滞效应使阻止力变大,在速度较高时却使阻止力变小。对于侧向力,在速度较低区域,黏滞系数越大,侧向力越小,当速度增大到波尔速度的1.5倍时,黏滞效应对侧向力的影响逐渐消失。
文摘From the Lagrangian density of QHD-I model, we study the properties of hot and dense nuclear matter when the zero-point correction is considered and find that the influence of zero-point correction is very important at high temperature.
文摘Starting from the QHD-I model, the nucleon-nucleon interaction potential in hot/dense nuclear matter is studied. We find that the attractive and repulsive Yukawa potential between nucleons is modified by the variation of Debye mass directly and, especially, the nucleon system described by this Yukawa potential will be unbounded at some critical T and μ. The critical point we get accords with that of L-G phase transition given by the P - pB phase diagram.
