It is just the difficulty that the strongly correlated electron systems can not be studied by analytical methods , a variety of simulative numerical methods come out sequentially . there are a few typical methods such as the exact diagonalization ( ed ) , the qutum monte carlo ( qmc ) , the variation monte carlo ( qmc ) , the renormalization group ( rg ) , and the density matrix renormalization group ( dmrg ) and so on 正是強(qiáng)關(guān)聯(lián)系統(tǒng)遇到了解析研究的困難,各種數(shù)值模擬方法才相繼出現(xiàn),最典型的數(shù)值方法有:嚴(yán)格對(duì)角化( ed ) ,量子蒙特卡洛( qmc )模擬、變分蒙特卡洛模擬( vmc ) 、數(shù)值重整化群( rg )以及密度矩陣重整化群( dmrg )等。
百科解釋
The density matrix renormalization group (DMRG) is a numerical variational technique devised to obtain the low energy physics of quantum many-body systems with high accuracy. It was invented in 1992 by Steven R.