Heavy hybrid stars from multi-quark interactions

Benić, Sanjin (2014) Heavy hybrid stars from multi-quark interactions. European Physical Journal A, 50. p. 111. ISSN 1434-6001

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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.

Item Type: Article
Keywords: ybrid stars, QCD phase transition
Date: 2014
Subjects: NATURAL SCIENCES > Physics
Additional Information: © The Author(s) 2014. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982930-1016
Publisher: Springer
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 12 Dec 2017 21:23
Last Modified: 12 Dec 2017 21:23
URI: http://digre.pmf.unizg.hr/id/eprint/5750

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