MISC

2005年9月

Ward-Takahashi relations for SO(4) symmetry in the Hubbard model

PHYSICAL REVIEW B
  • A Masumizu
  • ,
  • K Sogo

72
11
開始ページ
115107
終了ページ
記述言語
英語
掲載種別
DOI
10.1103/PhysRevB.72.115107
出版者・発行元
AMERICAN PHYSICAL SOC

Ward-Takahashi relations for spin symmetry SU(2)(S) and pseudospin symmetry SU(2)(C) are derived for the simple Hubbard model in arbitrary dimensions. For this purpose we generally discuss local SO(4) symmetry in terms of Clifford algebra, and employ a gauge transformed form of the original Hubbard Hamiltonian, which makes the Ward-Takahashi relations much simpler. Derived Ward-Takahashi relations are rewritten as the relations between self-energy and vertex part to discuss spontaneously broken symmetry and Fermi liquid property of the system for zero temperature magnetism.

Web of Science ® 被引用回数 : 5

リンク情報
DOI
https://doi.org/10.1103/PhysRevB.72.115107
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000232229100049&DestApp=WOS_CPL

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