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arXiv physics/0101079physics.plasm-phphysics.comp-ph
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低密度氢等离子体的路径积分蒙特卡罗模拟

Path Integral Monte Carlo Simulation of the Low-Density Hydrogen Plasma

B. Militzer, D. M. Ceperley

摘要:

采用限制性路径积分蒙特卡罗模拟计算了氢在$9.83 \times 10^{-4}\rm \leq ρ\leq 0.153 \rm gcm^{-3}$和$5000 \leq T \leq 250 000 \rm K$密度和温度范围内的平衡性质。我们测试的对密度矩阵的准确性和分析的依赖系统的大小,对时间步长的路径积分和节点表面的类型。我们计算的状态方程,并与其他模型的氢在此制度有效。此外,我们的特点的氢的状态和描述的变化,从等离子体的原子和分子液体通过分析对关联函数和估计的原子和分子的数量。

英文摘要:

Restricted path integral Monte Carlo simulations are used to calculate the equilibrium properties of hydrogen in the density and temperature range of $9.83 \times 10^{-4}\rm \leq ρ\leq 0.153 \rm gcm^{-3}$ and $5000 \leq T \leq 250 000 \rm K$. We test the accuracy of the pair density matrix and analyze the dependence on the system size, on the time step of the path integral and on the type of nodal surface. We calculate the equation of state and compare with other models for hydrogen valid in this regime. Further, we characterize the state of hydrogen and describe the changes from a plasma to an atomic and molecular liquid by analyzing the pair correlation functions and estimating the number of atoms and molecules present.

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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