Open AccessCORRELATED-BASIS-FUNCTION THEORY FOR EXCITED STATES
Author(s) -
Zhigang Shuai,
Sun X,
Ruigang Fu
Publication year - 1989
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.38.1648
Subject(s) - excited state , excitation , convolution (computer science) , basis (linear algebra) , physics , basis function , wave function , function (biology) , integral equation , electron , statistical physics , atomic physics , quantum mechanics , mathematical analysis , mathematics , computer science , geometry , machine learning , evolutionary biology , artificial neural network , biology
We developed a many-body method to calculate the electron correlated basis function of excited state. Based on the Chakravarty-Woo equation and functional expansion and convolution approximation, we got the linear integral iteration equation for the variation of density and correlation function, so the wave function, due to electron excitation. A general formula for excitation energy in many-body problem is obtained From this and the known experimental data, we found the energy gap and electron correlation in 1-d conducting polymer. The result is in good accordance with the experiment.