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Author Klein, A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ANISOTROPY ♦ BINDING ENERGY ♦ ENERGY LEVELS ♦ FERMIONS ♦ FIELD THEORY ♦ MANY BODY PROBLEM ♦ MATHEMATICS ♦ PARTICLE MODELS ♦ PERTURBATION THEORY ♦ PROPAGATOR ♦ QUANTUM MECHANICS ♦ SELF-ENERGY ♦ VAN HOVE-HUGENHOLTZ THEORY ♦ VARIATIONAL METHOD ♦ VECTORS
Abstract New forms of the linked cluster expansion for the groundstate energy of a normal spherical system are given in terms of the exact single-panticle propagator and of the associated self-energy operator. These forms are shown to be stationary with respect to variations of the latter quantities. A new concise proof of the Hugenholtz-Van Hove theorem on single-panticle energies is then possible. Tbe variational pninciple also explains the insensitivity of recent binding energy calculatione to the choice of singleparticle energies. It is known how all results may be extended to systems with anisotropic features. (auth)
ISSN 0031899X
Educational Use Research
Learning Resource Type Article
Publisher Date 1961-02-15
Publisher Department Univ. of Pennsylvania, Philadelphia
Journal Physical Review
Volume Number 121
Organization Univ. of Pennsylvania, Philadelphia


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