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Article

A Phenomenological Equation of State of Strongly Interacting Matter with First-Order Phase Transitions and Critical Points

by 1,2,* and 3,4,5
1
Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
2
GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
3
Institute of Theoretical Physics, University of Wroclaw, Pl. M. Borna 9, 50-204 Wroclaw, Poland
4
Bogoliubov Laboratory for Theoretical Physics, Joint Institute of Nuclear Research, Dubna 141980, Russia
5
National Research Nuclear University (MEPhi), Kashirskoe shosse 31, Moscow 115409, Russia
*
Author to whom correspondence should be addressed.
Universe 2018, 4(2), 32; https://doi.org/10.3390/universe4020032
Received: 12 December 2017 / Revised: 8 January 2018 / Accepted: 29 January 2018 / Published: 9 February 2018
(This article belongs to the Special Issue Compact Stars in the QCD Phase Diagram)
An extension of the relativistic density functional approach to the equation of state for strongly interacting matter is suggested that generalizes a recently developed modified excluded-volume mechanism to the case of temperature- and density-dependent available-volume fractions. A parametrization of this dependence is presented for which, at low temperatures and suprasaturation densities, a first-order phase transition is obtained. It changes for increasing temperatures to a crossover transition via a critical endpoint. This provides a benchmark case for studies of the role of such a point in hydrodynamic simulations of ultrarelativistic heavy-ion collisions. The approach is thermodynamically consistent and extendable to finite isospin asymmetries that are relevant for simulations of neutron stars, their mergers, and core-collapse supernova explosions. View Full-Text
Keywords: equation of state; QCD matter; phase transition; critical point; modified excluded-volume mechanism equation of state; QCD matter; phase transition; critical point; modified excluded-volume mechanism
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MDPI and ACS Style

Typel, S.; Blaschke, D. A Phenomenological Equation of State of Strongly Interacting Matter with First-Order Phase Transitions and Critical Points. Universe 2018, 4, 32. https://doi.org/10.3390/universe4020032

AMA Style

Typel S, Blaschke D. A Phenomenological Equation of State of Strongly Interacting Matter with First-Order Phase Transitions and Critical Points. Universe. 2018; 4(2):32. https://doi.org/10.3390/universe4020032

Chicago/Turabian Style

Typel, Stefan, and David Blaschke. 2018. "A Phenomenological Equation of State of Strongly Interacting Matter with First-Order Phase Transitions and Critical Points" Universe 4, no. 2: 32. https://doi.org/10.3390/universe4020032

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