The fractal dimensions of the spectrum of Sturm Hamiltonian
The fractal dimensions of the spectrum of Sturm Hamiltonian
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Sturm Hamiltonian 谱的分形维数
DOI:
10.1016/j.aim.2014.02.019
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发表时间:
2013-10
影响因子:
1.7
通讯作者:
Wen, Zhi-Ying
中科院分区:
文献类型:
--
作者:
Liu, Qing-Hui;Qu, Yan-Hui;Wen, Zhi-Ying
Abstract Let α∈(0, 1) be irrational and [0; a 1, a 2,…] be the continued fraction expansion of α. Let H α, V be the Sturm Hamiltonian with frequency α and coupling V, Σ α, V be the spectrum of H α, V. The fractal dimensions of the spectrum have been determined by Fan, Liu and Wen (2011)[8] when {a n} n⩾ 1 is bounded. The present paper will treat the most difficult case, ie,{a n} n⩾ 1 is unbounded. We prove that for V⩾ 24, dim H Σ α, V= s⁎(V) and dim¯ B Σ α, V= s⁎(V), where s⁎(V) and s⁎(V) are lower and upper pre-dimensions respectively. By this result, we determine the fractal dimensions of the spectrums for all Sturm Hamiltonians. We also show the following results: s⁎(V) and s⁎(V) are Lipschitz continuous on any bounded interval of [24,∞); the limits s⁎(V) ln V and s⁎(V) ln V exist as V tends to infinity, and the limits are constants only depending on α; s⁎(V)= 1 if and only if lim sup n→∞(a 1⋯ a n) 1/n=∞, which can be compared with the fact: s⁎(V)= 1 if and only if lim inf n→∞(a 1⋯ a n) 1/n=∞(Liu and Wen, 2004)[13].
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影响因子:
2.4
作者:
D. Damanik;A. Gorodetski
通讯作者:
D. Damanik;A. Gorodetski
影响因子:
2.4
作者:
D. Damanik;R. Killip;D. Lenz
通讯作者:
D. Damanik;R. Killip;D. Lenz
DOI:
10.1007/bf02896955
发表时间:
1997-05
期刊:
Science in China Series A: Mathematics
影响因子:
--
作者:
De-Jun Feng;Z. Wen;Jun Wu
通讯作者:
De-Jun Feng;Z. Wen;Jun Wu
DOI:
10.1007/bf02877068
发表时间:
2001-11
期刊:
Science in China Series A: Mathematics
影响因子:
--
作者:
Jihua Ma;H. Rao;Z. Wen
通讯作者:
Jihua Ma;H. Rao;Z. Wen
影响因子:
1.7
作者:
D. Damanik;A. Gorodetski
通讯作者:
D. Damanik;A. Gorodetski