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arXiv 1108.1707cond-mat.stat-mech
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弹性弦的脱钉跃迁

Depinning transitions in elastic strings

Soumyajyoti Biswas, Bikas K. Chakrabarti

摘要:

我们研究了两种不同情况下无序介质中弹性弦的脱钉相变。我们认为在一种情况下,弹性力是无限大的,其大小与弦的伸长成正比。在这种情况下,临界点和弹性行为可以在一定程度上估计。指数估计数值和标度关系被发现服从。我们还考虑了一个模型,其中弹性力的大小是恒定的。临界点可以再次论证和临界指数的数值估计。标度关系得到很好的遵守。这两个模型都不属于已知的普适类。

英文摘要:

We study the depinning transitions of elastic strings in disordered media in two different cases. We consider the elastic forces to be of infinite range in one case, where the magnitude is proportional to the extension of the string. The critical points and elastic behavior can be estimated to some extent in this case. The exponents are estimated numerically and scaling relations are found to be obeyed. We have also considered a model where the elastic force is constant in magnitude. The critical points can again be argued and the critical exponents are numerically estimated. The scaling relations are well obeyed. Both of these models do not fall into known universality classes.

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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