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Functional-derivative study of the Hubbard model. I. Perturbation method and first-order approximation
Tadashi Arai
,
Morrel H. Cohen
, M. P. Tosi
Research output
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Article
›
peer-review
8
Scopus citations
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Dive into the research topics of 'Functional-derivative study of the Hubbard model. I. Perturbation method and first-order approximation'. Together they form a unique fingerprint.
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Keyphrases
Functional Derivatives
100%
Green's Function
100%
Perturbation Method
100%
Hubbard Model
100%
First-order Approximation
100%
Zeroth-order
75%
Infinite Order
50%
Perturbation Scheme
50%
Self-energy Correction
50%
High-order
25%
Equations of Motion
25%
Narrowband
25%
Iterative Procedure
25%
Self-powered
25%
Hopping Motion
25%
Electron Correlation
25%
Systematic Treatment
25%
Basic Green
25%
Engineering
Green Function
100%
Functional Derivative
100%
Approximation Order
100%
Energy Engineering
75%
Final Result
50%
Iterative Procedure
25%
Narrowband
25%
Linear Term
25%
Chemistry
Tight Binding Model
100%
Hubbard Model
100%
Self-Energy
75%
Electron Correlation
25%