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arXiv 2109.08211nlin.PS
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一维电晶格中局域和扩展激发的输运

Transport of localized and extended excitations in one-dimensional electrical lattices

Mario I. Molina

摘要:

研究了由一维耦合液晶单元阵列组成的双电感电晶格的散射特性。对于一个初始本地化的电激发,并在没有任何杂质的情况下,我们计算在封闭的形式的初始本地化的电激发的均方位移的情况下,一个无限和半无限的晶格,在非常一般的条件下获得弹道传播。对于扩展激发的运输,我们计算在封闭的形式中的电感应平面波的透射系数的杂质区域,包含一些侧耦合单元,或一个单一的内部杂质与耦合到第一和第二最近的邻居,寻找法诺共振(FR)的存在。对于所有的情况下检查,我们得到一个封闭形式的表达式的FR的位置在所涉及的电感耦合的相对强度。对于两个相同的侧耦合杂质的情况,单个FR的位置与两个杂质之间的相对距离无关。

英文摘要:

We study the scattering properties of a bi-inductive electrical lattice consisting of a one-dimensional array of coupled LC units. For an initially localized electrical excitation, and in the absence of any impurity, we compute in closed form the mean square displacement of an initially localized electrical excitation for the cases of an infinite and semi-infinite lattice, obtaining a ballistic propagation under very general conditions. For the transport of extended excitations, we compute in closed form the transmission coefficient of electro-inductive plane waves across an impurity region, containing a number of side-coupled units, or a single internal impurity with coupling to first-and second nearest neighbors, looking for the presence of Fano resonances (FRs). For all cases examined, we obtain a closed-form expression for the position of the FR in terms of the relative strengths of the inductive couplings involved. For the case of two, identical side-coupled impurities, the position of the single FR turns out to be independent of the relative distance between the two impurities.

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