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- W2004671613 abstract "In the present work we have developed a large-N expansion for the $t-J$ model based on the path integral formulation for Hubbard-operators. Our large-N expansion formulation contains diagrammatic rules, in which the propagators and vertex are written in term of Hubbard operators. Using our large-N formulation we have calculated, for J=0, the renormalized $O(1/N)$ boson propagator. We also have calculated the spin-spin and charge-charge correlation functions to leading order 1/N. We have compared our diagram technique and results with the existing ones in the literature." @default.
- W2004671613 created "2016-06-24" @default.
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- W2004671613 date "2002-04-19" @default.
- W2004671613 modified "2023-10-05" @default.
- W2004671613 title "Large-<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>N</mml:mi></mml:math>expansion based on the Hubbard operator path integral representation and its application to the<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>t</mml:mi><mml:mo>−</mml:mo><mml:mi>J</mml:mi></mml:math>model" @default.
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- W2004671613 doi "https://doi.org/10.1103/physrevb.65.195107" @default.
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