Open AccessExact diagonalization solution of DNA model systems of limited grid
Author(s) -
Huang Shu-Wen,
Tao Liu,
Kelin Wang
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.2033
Subject(s) - excited state , exact solutions in general relativity , ground state , grid , reliability (semiconductor) , energy (signal processing) , saturation (graph theory) , mathematics , statistical physics , computer science , physics , quantum mechanics , combinatorics , power (physics) , geometry
A exact diagonalization solution method for solving the one-dimensional Holstein model of DNA is discussed in this paper. We compared the results of this paper with the former results of coherent state variational method CVM to check the reliability and accuracy of CVM. It is clearly seen that the ground state energy calculated by exact diagonalization solution method is considerably smaller than that of the CVM and can reach the saturation with smaller site number. With the strict method we can not only obtain the ground state energy, but also the spectra of all excited states. Therefore there is a significant improvement in the studying of Holstein model than the former CVM .