On the spatial extent of localized eigenfunctions for random Schrödinger operators
On the spatial extent of localized eigenfunctions for random Schrödinger operators
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关于随机薛定谔算子的局域本征函数的空间范围
DOI:
10.1007/s00220-022-04419-5
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发表时间:
2022
影响因子:
2.4
通讯作者:
Schenker, Jeffrey
中科院分区:
文献类型:
--
作者:
Klopp, Frédéric;Schenker, Jeffrey
On, consider, an-normalized function that decays exponentially atat a rate at least. One can define theonset length(of the exponential decay) ofas the radius of the smallest ball, say,B, such that one has the following global bound. The present paper is devoted to the study of the onset lengths of the localized eigenfunctions of random Schrödinger operators. Under suitable assumptions, we prove that, with probability one, the number of eigenfunctions in the localization regime having onset length larger thanand localization center in a ball of radiusLis smaller than, forlarge (for some constants). Thus, most eigenfunctions localize on small size balls independent of the system size which is the physicists understanding of localization; to our knowledge, this did not result from existing mathematical estimates. For energies near the edge of the spectrum, we also provide a lower bound of the same type on the number of those eigenfunctions; in dimension 1, the upper and lower bounds only differ by a logarithmic correction. Finally, we give a number of numerical results that exemplify situations giving rise to large onset lengths, that corroborate the validity of our main result and that suggest that, up to lower order terms, the above defined cumulative distribution of onset lengths shows asymptotic exponential decay at some definite rate.
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影响因子:
1.8
作者:
B. Simon
通讯作者:
B. Simon
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
Nariyuki Minami
通讯作者:
Nariyuki Minami
影响因子:
1.6
作者:
A. Klein;S. Molchanov
通讯作者:
S. Molchanov
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
B. Simon;T. Wolff
通讯作者:
T. Wolff
影响因子:
3.1
作者:
M. Aizenman;A. Elgart;S. Naboko;J. Schenker;G. Stolz
通讯作者:
G. Stolz