Structure of nuclei in a relavistic meson-baryon quantum field theory
Relativistic Hartree equations for spherical nuclei are derived from a relativistic nuclear quantum field theory using a coordinate-space Green's function approach. The renormalizable field theory Lagrangian includes the interaction of nucleons with sigma, ..omega.., rho, and ..pi.. mesons and the photon. The Hartree equations represent the mean-field approximation for a finite nuclear system. Coupling constants and the sigma meson mass are determined from the properties of nuclear matter and the rms charge radius in /sup 40/Ca. Calculated charge densities, neutron densities, rms radii, and single-nucleon energy levels throughout the periodic table are compared with data and with results of nonrelativistic calculations. Relativistic Hartree results agree with experiment at a level comparable to that of the most sophisticated nonrelativistic calculations to date. It is shown that the Lorentz covariance of the relativistic formalism leads naturally to density-dependent interactions between nucleons. Furthermore, nonrelativistic reduction reveals noncentral and nonlocal aspects inherent in the Hartree formalism. The success of this simple relativistic Hartree approach is attributed to these features of the interaction. Giant resonances in a relativistic field theory; Hartree-Fock description of nuclear matter; and the pion nucleon interaction.
- Research Organization:
- Stanford Univ., CA (USA)
- OSTI ID:
- 6243976
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
NUCLEAR STRUCTURE
QUANTUM FIELD THEORY
CALCIUM 40
COUPLING CONSTANTS
HARTREE-FOCK METHOD
LORENTZ INVARIANCE
MESONS
NUCLEAR MATTER
NUCLEAR RADII
NUCLEONS
PHOTONS
RELATIVISTIC RANGE
REST MASS
SPHERICAL CONFIGURATION
ALKALINE EARTH ISOTOPES
BARYONS
BOSONS
CALCIUM ISOTOPES
CONFIGURATION
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
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FIELD THEORIES
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INVARIANCE PRINCIPLES
ISOTOPES
LIGHT NUCLEI
MASS
MASSLESS PARTICLES
MATTER
NUCLEAR PROPERTIES
NUCLEI
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