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The effect of inclusion of delta resonances in relativistic mean-field model with scaled hadron masses and coupling constants
Title The effect of inclusion of delta resonances in relativistic mean-field model with scaled hadron masses and coupling constants Author info K. A. Maslov, E. E. Kolomeitsev, D. N. Voskresensky Author Maslov Konstantin A. (1%)
Co-authors Kolomeitsev Evgeni E. 1970- (98%) UMBFP06 - Katedra fyziky
Voskresensky Dmitri (1%)
Source document Journal of Physics: Conference Series. Vol. 798 (2017), pp. 1-5. - Bristol : IOP Publishing, 2017 ; International conference on particle physics and astrophysics ICPPA 2017 medzinárodná konferencia Keywords astrofyzika - astrophysics neutron stars relativita - relativity Language English Country Great Britian systematics 53 Annotation © Published under licence by IOP Publishing Ltd.Knowledge of the equation of state of the baryon matter plays a decisive role in the description of neutron stars. With an increase of the baryon density the filling of Fermi seas of hyperons and Δ isobars becomes possible. Their inclusion into standard relativistic mean-field models results in a strong softening of the equation of state and a lowering of the maximum neutron star mass below the measured values. We extend a relativistic mean-field model with scaled hadron masses and coupling constants developed in our previous works and take into account now not only hyperons but also the Δ isobars. We analyze available empirical information to put constraints on coupling constants of Δs to mesonic mean fields. We show that the resulting equation of state satisfies majority of presently known experimental constraints. Public work category AFC No. of Archival Copy 39068 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
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