摘要
We calculated the instantaneous-normal-mode (INM) densities of states for liquid Na, Lennard-Jones (LJ) liquid and truncated LJ liquid with the same reduced density and temperature by both molecular-dynamics simulation and the vector-random-walk approach under two-body approximation. By comparing the calculated results for these three liquids, we give some physical insights in the relationship between the INM density of state and the two-particle interaction potential. The effects of the short-range repulsive core, the long-range tail in the potential and the presence of attractive well are elucidated.
原文 | American English |
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頁(從 - 到) | 257-271 |
頁數 | 15 |
期刊 | Physica A: Statistical Mechanics and its Applications |
卷 | 254 |
發行號 | 1-2 |
DOIs | |
出版狀態 | Published - 15 5月 1998 |