摘要
A one-dimensional system with only off-diagonal disorder in which the absolute values of all the off-diagonal matrix elements are equa1 to a constant is studied w ith the renormalization group decimation method.It proves that all the eigenstates in the system are extended,regardless of the probability of the off-diagonal matrix elements being positive(or negative).
作者
TAN Weichao
谭维超(Department of Physics,Shandong University,Jinan)
