2007/02/11 by J. E. Horvath
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1007/s10509-007-9392-0
published as Astrophys.SpaceSci.307:419-422,2007 · 6 pp. 1 .eps figure, to apear in Astrophys. Space Sci
arxiv created 2007/02/11 · openalex publication_date 2007/03/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29
We address in this work the general features of a possible compact stars composed by elementary fermions beyond the quark level. The \it locus of these hypothetic objects in the mass-radius plane is constructed for the maximum mass (minimum radius) of the sequence of models in terms of a compositeness scale only, and in fact this approach applies for any composite model postulating fermions at or beyond the preon level. We point out a constraint on the preon mass arising from the applicability of the General Relativity structure equations, leading to the questioning of the hypothesis of light preons if the preon scale is high, provided classical compact objects are enforced. Some remarks on the existence of superdense stars of astrophysical and primordial origin are made and discussed.