Electroweak stars: how nature may capitalize on the standard model's ultimate fuel - High Energy Physics - PhenomenologyReportar como inadecuado




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Abstract: We study the possible existence of an electroweak star - a compactstellar-mass object whose central core temperature is higher than theelectroweak symmetry restoration temperature. We found a solution to theTolman-Oppenheimer-Volkoff equations describing such an object. The parametersof such a star are not substantially different from a neutron star - its massis around 1.3 Solar masses while its radius is around 8 km. What is differentis the existence of a small electroweak core. The source of energy in the corethat can at least temporarily balance gravity are standard-modelnon-perturbative baryon number B and lepton number L violating processesthat allow the chemical potential of $B+L$ to relax to zero. The energyreleased at the core is enormous, but gravitational redshift and the enhancedneutrino interaction cross section at these energies make the energy releaserate moderate at the surface of the star. The lifetime of this newquasi-equilibrium can be more than ten million years. This is long enough torepresent a new stage in the evolution of a star if stellar evolution can takeit there.



Autor: De-Chang Dai, Arthur Lue, Glenn Starkman, Dejan Stojkovic

Fuente: https://arxiv.org/







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