Self-consistent projection operator method for the single-particle excitation spectrum

A new projection operator method combined with the coherent potential approximation is presented. The theory interpolates between the strong- and the weak-Coulomb interaction limits, and allows us to calculate the momentum dependence of the self-energy. Numerical results for the case of infinite dim...

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Published in:	Journal of magnetism and magnetic materials Vol. 272; pp. 400 - 401
Main Authors:	Kakehashi, Y, Fulde, P
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-05-2004
Subjects:	Many-body coherent potential approximation Metal–insulator transition Projection operator method 71.10.Fd 71.10.Li 71.15.Qe Projection operator method 79.60.−i Metal–insulator transition 71.30.+h Many-body coherent potential approximation 71.10.−w
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Abstract	A new projection operator method combined with the coherent potential approximation is presented. The theory interpolates between the strong- and the weak-Coulomb interaction limits, and allows us to calculate the momentum dependence of the self-energy. Numerical results for the case of infinite dimensions indicate that it can describe quantitatively the quasi-particle properties of a system.
AbstractList	A new projection operator method combined with the coherent potential approximation is presented. The theory interpolates between the strong- and the weak-Coulomb interaction limits, and allows us to calculate the momentum dependence of the self-energy. Numerical results for the case of infinite dimensions indicate that it can describe quantitatively the quasi-particle properties of a system.
Author	Fulde, P Kakehashi, Y
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Cites_doi	10.1103/PhysRevLett.83.136 10.1103/RevModPhys.68.13 10.1080/00018739500101526 10.1103/PhysRevB.66.104428 10.1103/PhysRevB.45.7196 10.1103/PhysRevB.48.7167 10.1143/JPSJ.43.70 10.1103/PhysRevB.69.045101
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Copyright	2004 Elsevier B.V.
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Keywords	71.10.Fd 71.10.Li 71.15.Qe Projection operator method 79.60.−i Metal–insulator transition 71.30.+h Many-body coherent potential approximation 71.10.−w
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References	Fulde (BIB1) 1995 Kakehashi (BIB5) 2002; 66 Hirooka (BIB2) 1977; 43 Georges (BIB8) 1993; 48 Kakehashi, Fulde (BIB6) 2004; 69 Kakehashi (BIB3) 1992; 45 Georges, Pruschke (BIB4) 1996; 68 Bulla (BIB7) 1999; 83 Kakehashi (10.1016/j.jmmm.2003.12.699_BIB3) 1992; 45 Kakehashi (10.1016/j.jmmm.2003.12.699_BIB6) 2004; 69 Georges (10.1016/j.jmmm.2003.12.699_BIB4_1) 1996; 68 Kakehashi (10.1016/j.jmmm.2003.12.699_BIB5) 2002; 66 Bulla (10.1016/j.jmmm.2003.12.699_BIB7) 1999; 83 Fulde (10.1016/j.jmmm.2003.12.699_BIB1) 1995 Georges (10.1016/j.jmmm.2003.12.699_BIB8) 1993; 48 Hirooka (10.1016/j.jmmm.2003.12.699_BIB2) 1977; 43 Pruschke (10.1016/j.jmmm.2003.12.699_BIB4_2) 1995; 42
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SubjectTerms	Many-body coherent potential approximation Metal–insulator transition Projection operator method
Title	Self-consistent projection operator method for the single-particle excitation spectrum
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