Heavy hybrid stars from multi-quark interactions (CROSBI ID 210190)
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Podaci o odgovornosti
Benić, Sanjin
engleski
Heavy hybrid stars from multi-quark interactions
We explore the possibility of obtaining heavy hybrid stars within the framework of the two flavor Nambu--Jona-Lasinio model with 8-quark interactions in the scalar and in the vector channel. The main impact of the 8-quark scalar channel is to reduce the onset of quark matter, while the 8-quark vector channel acts to stiff the equation of state at high densities. Within the parameter space where the 4-quark vector channel is small, and the 8-quark vector channel sizeable, stable stars with 2M_sun and above are found to hold quark matter in their cores.
hybrid stars; QCD phase transition
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Podaci o izdanju
50
2014.
111-1-111-4
objavljeno
1434-6001
10.1140/epja/i2014-14111-1