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arXiv 1602.01310cond-mat.stat-mech
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吸附在表面并受到力的自回避行走

Self-avoiding walks adsorbed at a surface and subject to a force

EJ Janse van Rensburg, SG Whittington

摘要:

我们认为自我回避的行走最终附着在一个不可穿透的表面上,在那里它们可以吸附。我们把离这个平面最远的顶点称为顶顶点,我们考虑在包含顶顶点的平面上施加一个力。这个力可以指向远离吸附表面或朝向它。在这两种情况下,我们证明了自由能(在热力学极限)是相同的自由能时,力施加在最后一个顶点。这意味着确定临界力-温度曲线的标准对于施加力的两种方式是相同的,并且在两种情况下对推动步行的响应也是相同的。

英文摘要:

We consider self-avoiding walks terminally attached to an impenetrable surface at which they can adsorb. We call the vertices farthest away from this plane the top vertices and we consider applying a force at the plane containing the top vertices. This force can be directed away from the adsorbing surface or towards it. In both cases we prove that the free energy (in the thermodynamic limit) is identical to the free energy when the force is applied at the last vertex. This means that the criterion determining the critical force - temperature curve is identical for the two ways in which the force is applied and the response to pushing the walk is also the same in the two cases.

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