Published May 2012
| Version v1
Journal article
Influence of σ* and φ mesons on Λ Hyperon 1S0 superfluidity in neutron star matter
- 1. Changchun Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Changchun (China)
- 2. Center for Theoretical Physics, Jilin University, Changchun (China)
- 3. Department of Physics, Bohai University, Jinzhou (China)
- 4. Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing (China)
Description
Within the framework of the relativistic mean field theory, we investigate the 1S0 superfluidity (SF) of Λ hyperons in neutron star (NS) matter including σ* and φ mesons. The energy gap of Λ hyperons is calculated with the Nijmegen one-boson-exchange potentials for a ΛΛ pair. The parameter set we use is in line with the recent experimental data ΔBΛΛ∼1.01 ± 0.20-0.11+0.18 MeV. It is found that with σ* and φ mesons the pairing energy gap ΔF of Λ hyperons and the corresponding SF critical temperature TCΛ are suppressed. In addition the NS mass range of Λ hyperon SF is enlarged obviously. (authors)
Additional details
Identifiers
Publishing Information
- Journal Title
- Chinese Physics Letters
- Journal Volume
- 29
- Journal Issue
- 5
- Journal Page Range
- [4 p.]
- ISSN
- 0256-307X
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 51120382
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- BOSON-EXCHANGE MODELS; CRITICAL TEMPERATURE; ENERGY GAP; HYPERONS; MASS; MEAN-FIELD THEORY; MESONS; MEV RANGE; NEUTRON STARS; PAIRING ENERGY; POTENTIALS; RELATIVISTIC RANGE; SUPERFLUIDITY
- Descriptors DEC
- BARYONS; BINDING ENERGY; BOSONS; ELEMENTARY PARTICLES; ENERGY; ENERGY RANGE; FERMIONS; HADRONS; MATHEMATICAL MODELS; PARTICLE MODELS; PERIPHERAL MODELS; PHYSICAL PROPERTIES; STARS; STRANGE PARTICLES; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE
Optional Information
- Notes
- 4 figs., 3 tabs., 31 refs.; http://dx.doi.org/10.1088/0256-307X/29/5/059701