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Field-theory approach to ESR in quantum spin chains(New Developments in Strongly Correlated Electron Systems)

Masaki Oshikawa

この論文は国立情報学研究所の電子図書館事業により電子化されました。

物性研究Aug 20, 20010 citations

Exact Kohn-Sham eigenstates versus quasi-particles in simple models of strongly correlated electrons

Jaime Ferrer, Diego J. Carrascal

Bulletin of the American Physical SocietyFeb 27, 20120 citations

Kohn-Sham Density Functional Theory and Strong Electron Correlation

Lucas O. Wagner

Jan 1, 20130 citations

Chiral Ordered Phases in Frustrated Quantum Spin Chains(New Developments in Strongly Correlated Electron Systems)

Toshiya Hikihara, Makoto Kaburagi, Hikaru Kawamura

この論文は国立情報学研究所の電子図書館事業により電子化されました。

物性研究Aug 20, 20010 citations

Quantum phase transitions in strongly correlated electron systems = 強相関電子系における量子相移転

Manfred Sigrist

Jan 1, 20010 citations

A Rigorous Extension of the Kohn-Sham Equation for Strongly Correlated Electron Systems

Koichi Kusakabe

By introducing a set of auxiliary equations representing a many-body system, we have derived an extension of the Kohn-Sham scheme for the density functional theory. These equations consist of a Kohn-Sham-type equation determining single-particle orbitals and an eigen-value equation for an effective many-body problem. A variational method similar to the Kohn-Sham technique was utilized to derive effective interactions as well as effective potentials without artificial substitution of a Hubbard-type interaction and a mean-field correction in the energy functional. The second equation is described by an effective many-body Hamiltonian with both 2-body interactions and mean-field terms. Rigorous formulation of the extended Kohn-Sham equation is also given in accordance with the Hadjisavvas-Theophilou formulation. Our formulation can be interpreted as a way to define models of the strongly correlated electron systems, e.g. the Hubbard modelBy introducing a set of auxiliary equations representing a many-body system, we have derived an extension of the Kohn-Sham scheme for the density functional theory. These equations consist of a Kohn-Sham-type equation determining single-particle orbitals and an eigen-value equation for an effective many-body problem. A variational method similar to the Kohn-Sham technique was utilized to derive effective interactions as well as effective potentials without artificial substitution of a Hubbard-type interaction and a mean-field correction in the energy functional. The second equation is described by an effective many-body Hamiltonian with both 2-body interactions and mean-field terms. Rigorous formulation of the extended Kohn-Sham equation is also given in accordance with the Hadjisavvas-Theophilou formulation. Our formulation can be interpreted as a way to define models of the strongly correlated electron systems, e.g. the Hubbard model

arXiv:cond-mat/0103094Journal of the Physical Society of JapanJul 15, 200123 citations

An Extension of the Kohn-Sham Equations for the Correlated Electron Systems(New Developments in Strongly Correlated Electron Systems) :

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An Extension of the Kohn-Sham Equations for the Correlated Electron Systems(New Developments in Strongly Correlated Electron Systems) :

Abstract

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