Open AccessFlow equations for solving elementary excitation energy spectrum of the t-J model
Author(s) -
Weiyi Hong,
Ping Lou,
Zhuang Yong-He
Publication year - 2004
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.53.577
Subject(s) - physics , excitation , spectrum (functional analysis) , symmetry (geometry) , energy spectrum , renormalization group , renormalization , flow (mathematics) , energy (signal processing) , mathematical physics , function (biology) , superconductivity , electron , statistical physics , quantum electrodynamics , quantum mechanics , mathematics , mechanics , geometry , evolutionary biology , biology
The t-J model is one of the most important models that is often used to study the theory of the effect of strong electron correlations and high-Tc superconductivity. In this article, the method of renormalization group is used to investigate the t-J model and the elementary excitation energy spectrum of the t-J model is obtained by using the flow equations. Using the symmetry of functions, we can solve the specific expression of the energy spectrum. The result is compared with the result of Green's function method.