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arXiv 0807.0772cond-mat.dis-nn
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具有大局部涨落的一维随机势的局部化

Localization for one-dimensional random potentials with large local fluctuations

Tom Bienaime, Christophe Texier

摘要:

研究了随机势$V(x)$的一维薛定谔哈密顿量的波函数的局部化问题,其中随机势$V(x)$具有短程关联和大的局部涨落,使得$\int\D{x} \smean{V(x)V(0)}=\infty$ .一个随机超对称哈密顿也被认为是。根据$V(x)$的波动有多大,我们发现无论是新的能量依赖的本地化长度,$\ell_\mathrm{loc}\propto{}E/\ln{E}$,$\ell_\mathrm{loc}\propto{}E^{μ/2}$与$0<μ<2$或$\ell_\mathrm{loc}\propto\ln^{μ-1}E$的$μ>1$,或超本地化(衰减的波函数比一个简单的指数)。

英文摘要:

We study the localization of wave functions for one-dimensional Schrödinger Hamiltonians with random potentials $V(x)$ with short range correlations and large local fluctuations such that $\int\D{x} \smean{V(x)V(0)}=\infty$. A random supersymmetric Hamiltonian is also considered. Depending on how large the fluctuations of $V(x)$ are, we find either new energy dependences of the localization length, $\ell_\mathrm{loc}\propto{}E/\ln{E}$, $\ell_\mathrm{loc}\propto{}E^{μ/2}$ with $0<μ<2$ or $\ell_\mathrm{loc}\propto\ln^{μ-1}E$ for $μ>1$, or superlocalization (decay of the wave functions faster than a simple exponential).

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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