Resonating Hartree-Fock Theory of the One Dimensional Hubbard Model.I.Quantum Fluctuations by SDW Solitons and Breathers

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概要

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• The electronic structure of the one dimensional Hubbard model is calculated by theresonating Hartree-Fock (HF) method. Solitons in the spin density wave (SDW)order parameter (OP) make translational bands with a lot of high harmonics. Theireffective masses are about 0.1 of the electron mass, so that they are potentially goodcharge or spin carriers. We consider diradical and zwitterionic breathers, which con-sist of a neutral and charged soliton-antisoliton pair, respectively, making quanturntranslational and breathing motions, as local quantum fluctuations in the SDW in thehalf filled case. The stabilization of the ground state by the resonationg breathersamounts to 76.5% (&=3) and 70.1% (U=4) of the correlation energy. This is betterthan the result of the Gutzwiller method. The fluctuations by breathers explain therapid decrease of the spin correlation function in short distances and give also lowenergy excited states with the symmetries and energetic ordering 'fl< 'A< 'B that arecharacteristic in polyenes.[Res HF theory, 10 Hubbard model, quantum fluctuation, SDW soliton, SDW ll breather, spin correlationl

• 社団法人日本物理学会の論文
• 1991-10-15

著者

• TAKAHASHI Akira

  Department of Dermatology, School of Medicine, Fukuoka University

• Yamamoto Shoji

  The Third Division Internal Medicine Osaka College

• FUKUTOME Hideo

  Department of Physics, Kyoto University

• YAMAMOTO Shoji

  Department of Physics, Hokkaido University

• Fukutome H

  Kyoto Univ. Kyoto

• Fukutome Hideo

  Department Of Physics Faculty Of Science Kyoto University

• Takahashi A

  Snp Research Center The Institute Of Physical And Chemical Research (riken)

• Yamamoto S

  Department Of Physics Okayama University

• Yamamoto Shoji

  The Third Divison Department Of Lnternal Medicine. Osaka Medical College

• Yamamoto S

  Hokkaido Univ. Sapporo

• Yamamoto Shoji

  The Third Division Department Of Internal Medicine Osaka Medical College

• Yamamoto Shoji

  Department Of Biological Chemistry And Crest (core Research For Educational Science And Technology)

• Takizawa T

  Department Of Physics Gunma University

• Yamamoto Seishi

  Department Of Physics Faculty Of Literature And Science Yamaguchi University

• Takahashi Akira

  Department Of Advanced Materials Science And Engineering Faculty Of Engineering Yamaguchi University

• Yamamoto Shoji

  The 3rd Div. Dept. Of Int. Med. Osaka Medical College Takatsuki-shi

• FUKUTOME Hideo

  Department of Physics, Faculty of Science, Kyoto University

• FUKUTOME Hideo

  Department of Physics, Kyoto Unversity

• FUKUTOME Hideo

  Deoartment of Physics, Kyoto University

• Yamamoto Shoji

  National Institute of Advanced Industrial Science and Technology

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