Random Dirac Operators with Time Reversal Symmetry
Random Dirac Operators with Time Reversal Symmetry
复制标题
具有时间反演对称性的随机狄拉克算子
DOI:
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
H. Schulz
中科院分区:
文献类型:
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作者:
Christian Sadel;H. Schulz
Quasi-one-dimensional stochastic Dirac operators with an odd number of channels, time reversal symmetry but otherwise efficiently coupled randomness, are shown to have one conducting channel and absolutely continuous spectrum of multiplicity two. This follows by adapting the criteria of Guivarch-Raugi and Goldsheid-Margulis to the analysis of random products of matrices in the group SO*(2L), and then a version of Kotani theory for these operators. Absence of singular spectrum can be shown by adapting an argument of Jaksic-Last if the potential contains random Dirac peaks with absolutely continuous distribution.