PROPERTIES OF THE ONE-PARTICLE GREEN'S FUNCTION FOR NONUNIFORM MANY-FERMION SYSTEMS

Journal Article · Tue Jan 15 00:00:00 EST 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.129.897· OSTI ID:4732477

Layzer, A J

Some general properties of the one-particle Green's function for nonuniform many-fermion systems and the associated single-particle interpretation of physical properties of such systems are discussed. In particular, the ground- state energy, the density of particles in the ground state, and the single- particle excitation spectrum are considered. The investigation is restricted to the case of a static external field and a system at zero temperature. Various general approximation methods are studied starting from one in which the self- energy operator is replaced by an Hermitian and energy-independent operator. (auth)

• Research Organization: New York Univ., New York
• NSA Number: NSA-17-006990
• OSTI ID: 4732477
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Vol. Vol: 129; Other Information: Orig. Receipt Date: 31-DEC-63
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

PHYSICS
GREEN FUNCTION
HERMITIAN OPERATORS