Role of the tensor force in nuclear matter saturation

Journal Article · Thu Oct 01 04:00:00 EDT 1998 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.58.2120· OSTI ID:659341

Banerjee, M K; Tjon, J A ^[1]; Banerjee, M K ^[2]; Tjon, J A ^[3]

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1. Department of Physics, University of Maryland, College Park, Maryland 20742-4111 (United States)
2. IKP, Forschungszentrum-Juelich, 52425 Juelich (Germany)
3. Institute for Theoretical Physics, University of Utrecht, 3508 TA Utrecht (The Netherlands)

In the fraamework of a relativistic Dirac-Brueckner analysis the pion contribution to the ground state energy of nuclear matter is studied using pseudovector coupling. Evidence is presented that the role of the tensor force in the saturation mechanism is substantially reduced compared to its dominant role in a usual nonrelativistic treatment. The reduction of the pion contribution in nuclear matter is due to many-body effects present in a relativistic treatment. In particular, we show that the damping of the one-pion-exchange potential is actually due to the decrease of M{sup {asterisk}}/M with increasing density. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 659341
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 58; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
GROUND STATES
MANY-BODY PROBLEM
NUCLEAR FORCES
NUCLEAR MATTER
PIONS
POTENTIAL ENERGY
RELATIVISTIC RANGE
SATURATION
TENSOR FORCES