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Possibility of s-wave pion condensates in neutron stars revisited
- Source :
- Phys. Rev. C80, 038202 (2009)
- Publication Year :
- 2008
-
Abstract
- We examine possibilities of pion condensation with zero momentum (s-wave condensation) in neutron stars by using the pion-nucleus optical potential U and the relativistic mean field (RMF) models. We use low-density phenomenological optical potentials parameterized to fit deeply bound pionic atoms or pion-nucleus elastic scatterings. Proton fraction (Y_p) and electron chemical potential (mu_e) in neutron star matter are evaluated in RMF models. We find that the s-wave pion condensation hardly takes place in neutron stars and especially has no chance if hyperons appear in neutron star matter and/or b_1 parameter in U has density dependence.<br />Comment: 4 pages, 3 figures, REVTeX
- Subjects :
- Nuclear Theory
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. C80, 038202 (2009)
- Publication Type :
- Report
- Accession number :
- edsarx.0810.3531
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevC.80.038202