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arXiv physics/0411172physics.atom-phphysics.chem-ph
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氢原子的高阶C_n色散系数

The higher-order C_n dispersion coefficients for hydrogen

J. Mitroy, M. W. J. Bromley

摘要:

用伪态方法计算了H(1 s)-H(1 s)二聚体的二阶、三阶和四阶范德华系数C_n(n=32)的完整集合,以确定合适的求和规则。对n<=16的收敛模式的研究表明,所有C_n(n<=16)系数都精确到13位有效数。四阶C^4_n系数与二阶C^2_n系数的相对大小随n的增加而增加,当n=32时,四阶项实际上更大。

英文摘要:

The complete set of 2nd, 3rd and 4th order van der Waals coefficients, C_n up to n=32 for the H(1s)-H(1s) dimer are computed using pseudo-states to evaluate the appropriate sum rules. A study of the convergence pattern for n<=16 indicates that all the C_n (n<=16) coefficients are accurate to 13 significant digits. The relative size of the 4th-order C^4_n to the 2nd-order C^2_n coefficients is seen to increase as n increases and at n=32 the 4th-order term is actually larger.

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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