2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996 | 1995 | 1994 | 1993 | 1992 | 1991 | 1990 | 1989 | 1988 | 1987 | 1986 | 1985 | 1984 | 1983 | 1982 | 1981 | 1980 | 1979 | 1978 | 1977 | 1976 | 1975 | 1974 | 1973 | 1972 | 1971 | 1970 | 1969 | 1968 | 1967 | 1966 | 1965 | 1964 | 1963 | 1962 | 1961 | 500 | 76 | 0

Interplay between the symmetry energy and the strangeness content of neutron stars

Authors: Constança ProvidĂȘncia and Aziz Rabhi

Ref.: Phys. Rev. C 87, 055801-055809 (2013)

Abstract: The effect of the density dependence of the nucleonic equation of state and the hyperon-meson couplings on the star properties, including strangeness content, mass, and radius, are studied within a relativistic mean-field formalism. Information is still lacking on the nucleonic equation of state at suprasaturation densities and on the hyperon interactions in nuclear matter that will allow a clear answer to the question of whether the mass of the pulsar J1614-2230 could rule out exotic degrees of freedom from the interior of compact stars. We show that some star properties are affected in a similar way by the density dependence of the symmetry energy and the hyperon content of the star. To disentangle these two effects it is essential to have a good knowledge of the equation of state at suprasaturation densities. A linear correlation between the radius and the strangeness content of a star with a fixed mass is obtained.

DOI: 10.1103/PhysRevC.87.055801