MANY-BODY PROBLEM IN QUANTUM FIELD THEORY
A formalism for the covariant description of scattering processes involving composite particles is derived from flrst principles. lts basic ingredients are the Green's functions of quantum field theory combined with a physically sound formulation of the adiabatic hypothesis. Explicit expressions are presented for various examples of nucleon-nucleus and bosonnucleus collisions. It is shown that the impulse approximation can be formulated for such problems. A general method of obtaining electromagnetic moments of nuclei, based on the scattering formalism, is also derived. The normalization condition for covariant amplitudes is discussed and its application to boundstate problems reviewed. In particular, a method of carrying out perturbation theory for the discrete spectrum is suggested. (auth)
- Research Organization:
- Univ. of Pennsylvania, Philadelphia
- NSA Number:
- NSA-12-001794
- OSTI ID:
- 4327180
- 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- Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 108; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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