Research in theoretical nuclear physics, Nuclear Theory Group. Progress report
Primary emphasis is placed on understanding the nature of nucleon-nucleon and meson-nucleon interactions and on determining the consequences of such microscopic interactions in nuclear systems. We have constructed models of baryons which smoothly interpolate between currently popular bag and Skyrme models of hadrons and provide a vehicle for introducing the notions of quantum chromodynamics to low energy nuclear physics without violating the constraints of chiral invariance. Such models have been used to study the nucleon-nucleon interaction, the spectrum of baryons, and the important question of the radius of the quark bag. We have used many-body techniques to consider a variety of problems in finite nuclei and infinite many-body systems. New light has been shed on the nuclear coexistence of spherical and deformed states in the A = 18 region as well as the role of genuine three-body forces in this region. Phenomenological studies of infinite systems have led to a number of predictions particularly regarding the spin-polarized quantum liquids of current experimental interest. Microscopic many-body theories, based on the parquet diagrams, have been improved to a fully quantitative level for the ground state properties of infinite many-body systems. Finite temperature theories of nuclear matter, important in the study of heavy ion reactions, have been constructed. An expanded program in heavy ion theory has led to major advances in the multi-dimensional barrier penetration problem. Activities in nuclear astrophysics have provided a far more reliable description of the role of electron capture processes in stellar collapse. As a consequence, we have been able to perform legitimate calculations of the unshocked mass in Type II supernovae.
- Research Organization:
- State Univ. of New York, Stony Brook (USA). Dept. of Physics
- DOE Contract Number:
- AC02-76ER13001
- OSTI ID:
- 6525629
- Report Number(s):
- DOE/ER/13001-40; ON: DE84016613
- Resource Relation:
- Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTROPHYSICS
RESEARCH PROGRAMS
NUCLEAR MATTER
NUCLEAR THEORY
BAG MODEL
EQUATIONS OF STATE
GRAVITATIONAL COLLAPSE
HADRONS
HEAVY ION REACTIONS
MANY-BODY PROBLEM
MESON-NUCLEON INTERACTIONS
NEUTRON STARS
NUCLEAR PHYSICS
NUCLEAR REACTION KINETICS
NUCLEAR STRUCTURE
NUCLEON-NUCLEON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FLUIDS
STAR EVOLUTION
STARS
SUPERNOVAE
BARYON-BARYON INTERACTIONS
CHARGED-PARTICLE REACTIONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
EQUATIONS
ERUPTIVE VARIABLE STARS
EXTENDED PARTICLE MODEL
FIELD THEORIES
FLUIDS
HADRON-HADRON INTERACTIONS
INTERACTIONS
KINETICS
MATHEMATICAL MODELS
MATTER
MESON-BARYON INTERACTIONS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PHYSICS
QUANTUM FIELD THEORY
QUARK MODEL
REACTION KINETICS
VARIABLE STARS
653000* - Nuclear Theory
640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar
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