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:
--
复制
发表时间:
2009
期刊:
影响因子:
--
通讯作者:
H. Schulz
H. Schulz
中科院分区:
--
文献类型:
--
作者:
Christian Sadel;H. Schulz

文献摘要

被引文献

相似文献

准一维随机狄拉克运营商的奇数个通道,时间反演对称,但其他有效地耦合随机性,被证明有一个传导通道和绝对连续的频谱的多重性2。接下来,将Guivarch-Raugi和Goldsheid-Margulis的准则应用于SO*(2L)群中矩阵的随机乘积的分析,然后将Kotani理论应用于这些算子。如果势函数中含有绝对连续分布的随机Dirac峰,则通过引入Jaksic-Last的一个变元可以证明奇异谱的不存在。
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.