Response to “Comment on ‘Markovian approximation in a coarse-grained description of atomic systems’ ” [J. Chem. Phys. 128, 147101 (2008)]
Response to “Comment on ‘Markovian approximation in a coarse-grained description of atomic systems’ ” [J. Chem. Phys. 128, 147101 (2008)]
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对“原子系统粗粒度描述中的马尔可夫近似的评论”[J. Phys. 128, 147101 (2008)]
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发表时间:
2008
期刊:
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通讯作者:
P. Español
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作者:
Carmen Hijón;M. Serrano;P. Español
We show within the Mori theory of projection operators that the Green-Kubo formula using microscopic rather than projected forces is only valid if the description is Markovian. Therefore, the only way to assess whether a description is Markovian is through examining the predictions of the theory under the Markovian assumption. Although, in principle, the blob description for a unidimensional chain is non-Markovian, in practice the Markovian approximation describes reasonably well the coarse dynamics of the chain.