arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0906.1908cond-mat.dis-nn
收藏

交流驱动的无序弹性界面的平均场论

On mean field theory for ac-driven elastic interfaces exposed to disorder

Friedmar Schütze

摘要:

在随机势场中,交流驱动的弹性界面的解析描述是可取的,因为这个问题是实验相关的。这项工作强调在零温度下的平均场近似的问题。我们证明了扰动理论是经常在所有的订单,给出了一个归纳计划如何找到一组不良行为的图形,相互取消,留下一个正则表达式。在参数制度的微扰理论是适用的,它同意数值结果。进一步,我们确定了平均速度的傅立叶系数对模型参数的依赖性。

英文摘要:

The analytic description of ac-driven elastic interfaces in random potentials is desirable because the problem is experimentally relevant. This work emphasises on the mean field approximation for the problem at zero temperature. We prove that perturbation theory is regular in all orders by giving an inductive scheme how to find groups of ill-behaved graphs that mutually cancel, leaving a regular expression. In the parameter regimes for which perturbation theory is applicable it agrees with numerical results. Further, we determine the dependence of the Fourier coefficients of the mean velocity on the parameters of the model.

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。

↑