Effect of f0(975) and φ(1020) Mesons on Neutron Star Mater
- Received Date: 2006-05-19
- Accepted Date: 2006-11-20
- Available Online: 2007-04-05
Abstract: In the RMF approach, considering the contributions of the σ* and φ mesons and the hyperons in the baryon octet {N,P,Λ,∑-,∑0,∑+,Ξ-,Ξ0}, the properties of neutron star matter have been investigated. It is found that with the contributions of the σ* and φ mesons, the critical baryon density of hyperon appearance decreases, the number of hyperons increases, the transition density ρ0H of hyperon stars decreases, the equation of state turns soft, the maximum mass of neutron star decreases and the corresponding radius increases, the central density, the central energy density and the central pressure are all reduced.