高密度氢的内能:解析近似与路径积分蒙特卡罗计算的比较
Internal energy of high density Hydrogen: Analytical approximations compared with path integral Monte Carlo calculations
摘要:
本文用两种不同的解析近似方法(有效离子-离子相互作用势方法- EIIP和化学图像内的Padé方法- PACH)计算了$T = 10,000 ... 50,000 K$温度范围内高密度氢等离子体的内能,并与路径积分Monte Carlo结果进行了比较。从三个独立的计算得到的结果之间的合理协议被发现,仍然存在的差异的原因进行了调查。有趣的高密度现象,如集群的形成和结晶的发病进行了讨论。
英文摘要:
The internal energy of high-density hydrogen plasmas in the temperature range $T = 10,000 ... 50,000 K$ is calculated by two different analytical approximation schemes (method of effective ion-ion interaction potential - EIIP and Padé approach within the chemical picture - PACH) and compared with path integral Monte Carlo results. Reasonable agreement between the results obtained from the three independent calculations is found, the reasons for still existing differences is investigated. Interesting high density phenomena such as the formation of clusters and the onset of crystallization are discussed.
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