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arXiv 2104.01676math.APmath-phmath.MP
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一般维扩散界面吸引/排斥模型大体积极限下极小元的一维性

One-dimensionality of the minimizers in the large volume limit for a diffuse interface attractive/repulsive model in general dimension

Sara Daneri, Eris Runa

摘要:

本文考虑Daneri-Kerschbaum-Runa arXiv:1907.06419中研究的具有局部/非局部吸引/排斥项的扩散界面广义反铁磁竞争模型.模型的参数用$τ$和$\varepsilon$表示:参数$τ$表示局部项相对于非局部项的相对强度,而参数$\varepsilon$描述Modica-Mortola型项中的跃迁尺度。限制到一个周期框的大小$L$,与$L$多个周期的最小一维极小,在Daneri-Kerschbaum-Runa arXiv:1907.06419作者证明,在任何维度$d\geq1$和小,但积极的$τ$和$\varepsilon$(最终取决于$L$),极小是非常数一维周期函数。在本文中,我们证明了周期性和一维极小也发生在零温度模拟的热力学极限,即$L\to+\infty$。

英文摘要:

In this paper we consider the diffuse interface generalized antiferromagnetic model with local/nonlocal attractive/repulsive terms in competition studied in Daneri-Kerschbaum-Runa arXiv:1907.06419. The parameters of the model are denoted by $τ$ and $\varepsilon$: the parameter $τ$ represents the relative strength of the local term with respect to the nonlocal one, while the parameter $\varepsilon$ describes the transition scale in the Modica-Mortola type term. Restricting to a periodic box of size $L$, with $L$ multiple of the period of the minimal one-dimensional minimizers, in Daneri-Kerschbaum-Runa arXiv:1907.06419 the authors prove that in any dimension $d\geq1$ and for small but positive $τ$ and $\varepsilon$ (eventually depending on $L$), the minimizers are non-constant one-dimensional periodic functions. In this paper we prove that periodicity and one-dimensionality of minimizers occurs also in the zero temperature analogue of the thermodynamic limit, namely as $L\to+\infty$.

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