Pion condensation and realistic interactions
Journal Article
·
· Phys. Rev., C; (United States)
The static pion p-wave self-energy in symmetric nuclear matter is calculated, taking into account the effects of nucleon particle-hole (ph) and ..delta..-isobar nucleon-hole (..delta..h) states. The residual interaction between ph states is derived from a Brueckner G matrix which depends on the starting energy and three momentum variables. The coupling of ph and ..delta..h states and the ..delta..h-..delta..h interaction is described by ..pi.. and rho exchange taking into account the effects of NN correlations. The resulting self-energies are analyzed in the model of constant interaction strengths which is commonly used. This analysis yields effective interaction strengths weakly depending on the momentum of the pion field as well as on the nuclear density. Only in the limit of vanishing pion momentum the strength of the ph interaction is connected with the Landau parameter G/sup prime//sub 0/. The present calculation yields pion condensation at twice the empirical nuclear matter density when isobars are included.
- Research Organization:
- Natuurkundig Laboratorium, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- OSTI ID:
- 6593952
- Journal Information:
- Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 23:3; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
653002* -- Nuclear Theory-- Nuclear Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BRUECKNER MODEL
COUPLING CONSTANTS
ENERGY
ENERGY DEPENDENCE
FORM FACTORS
G MATRIX
HADRON-HADRON INTERACTIONS
INTERACTIONS
ISOBAR MODEL
ISOSPIN
MATHEMATICAL MODELS
MATRICES
MATTER
NEUTRON STARS
NUCLEAR MATTER
NUCLEAR MODELS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE-HOLE MODEL
PION CONDENSATION
PROPAGATOR
SELF-ENERGY
STARS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BRUECKNER MODEL
COUPLING CONSTANTS
ENERGY
ENERGY DEPENDENCE
FORM FACTORS
G MATRIX
HADRON-HADRON INTERACTIONS
INTERACTIONS
ISOBAR MODEL
ISOSPIN
MATHEMATICAL MODELS
MATRICES
MATTER
NEUTRON STARS
NUCLEAR MATTER
NUCLEAR MODELS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE-HOLE MODEL
PION CONDENSATION
PROPAGATOR
SELF-ENERGY
STARS