Simultaneous Chiral Symmetry Restoration and Deconfinement Consequences for the QCD Phase Diagram

Klähn, Thomas and Fischer, Tobias and Hempel, Matthias. (2017) Simultaneous Chiral Symmetry Restoration and Deconfinement Consequences for the QCD Phase Diagram. Astrophysical Journal, 836 (1). p. 11.

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Official URL: http://edoc.unibas.ch/58106/

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For studies of quark matter in astrophysical scenarios, the thermodynamic bag model is commonly employed. Although successful, it does not account for dynamical chiral symmetry breaking and repulsions due to the vector interaction which is crucial to explain recent observations of massive, two solar mass neutron stars. In Klähn & Fischer we developed the novel vBag quark matter model which takes these effects into account. This article extends vBag to finite temperatures and isospin asymmetry. Another particular feature of vBag is the determination of the deconfinement bag constant ${B}_{\mathrm{dc}}$ from a given hadronic equation of state in order to ensure that chiral and deconfinement transitions coincide. We discuss consequences of this novel approach for the phase transition construction, the phase diagram, and implications for protoneutron stars.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Astrophysik (Liebendörfer)
05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Hempel, Matthias
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:IOP Publishing
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:29 Jan 2018 15:35
Deposited On:28 Dec 2017 07:14

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