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Volumn 10, Issue 17, 1996, Pages 2137-2166

A class of collective excitations of the Hubbard model: η excitation of the negative-u model

Author keywords

[No Author keywords available]

Indexed keywords


EID: 0542390759     PISSN: 02179792     EISSN: None     Source Type: Journal    
DOI: 10.1142/S0217979296000982     Document Type: Article
Times cited : (20)

References (33)
  • 4
    • 2742599752 scopus 로고    scopus 로고
    • In principle, a two-particle tunneling process could couple to this excitation but this would also require a superconductor
    • In principle, a two-particle tunneling process could couple to this excitation but this would also require a superconductor.
  • 7
    • 0004265644 scopus 로고
    • Benjamin/ Cummings Publishing Co., Reading, Massachusetts
    • J. Schrieffer, Theory of Superconductivity (Benjamin/ Cummings Publishing Co., Reading, Massachusetts, 1971).
    • (1971) Theory of Superconductivity
    • Schrieffer, J.1
  • 12
  • 18
    • 2742534999 scopus 로고    scopus 로고
    • note
    • e and will be omitting all the factors of N for brevity. So, that summation over all momenta p in our notations gives 1 and not N. This may be viewed as analog of normalization by a unit volume in the continuous case. When needed the explicit dependence on N may be easily recovered.
  • 19
    • 2742520642 scopus 로고    scopus 로고
    • note
    • q) are the expectation values of the corresponding operators and in commutation relations must be considered as c-numbers.
  • 20
    • 2742521707 scopus 로고    scopus 로고
    • note
    • We remind the reader that since the present analysis is for T = 0, all the Fermi functions in (26)-(31) vanish.
  • 21
    • 2742519581 scopus 로고    scopus 로고
    • note
    • 0 is exactly the same as in (4). This procedure of Hartree-Fock corrections reducing to the renormalization of μ is explicit in the equations of motion.
  • 22
    • 25044438103 scopus 로고
    • S. White et al., Phys. Rev. B40, 506 (1989).
    • (1989) Phys. Rev. , vol.B40 , pp. 506
    • White, S.1
  • 31
    • 2742568991 scopus 로고    scopus 로고
    • We refer the reader to a well known theorem that μ = U/2 at half-filling
    • We refer the reader to a well known theorem that μ = U/2 at half-filling.
  • 32
    • 2742526178 scopus 로고    scopus 로고
    • B = 1
    • B = 1.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.