A renormalization group method for calculating the localization length of coupled disordered chains is presented.By using this method,we can determine the localization length of coupled chains accurately.
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 pro...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).展开更多
文摘A renormalization group method for calculating the localization length of coupled disordered chains is presented.By using this method,we can determine the localization length of coupled chains accurately.
文摘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).