Mass-radius constraints for compact stars and a critical endpoint

Blaschke D, Alvarez-Castillo DE, Benic S (2013)
In: Proceedings, 8th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2013). 063.

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Konferenzbeitrag | Veröffentlicht | Englisch
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Einrichtung
Abstract / Bemerkung
We present two types of models for hybrid compact stars composed of a quarkcore and a hadronic mantle with an abrupt first order phase transition at theinterface which are in accordance with the latest astrophysical measurements oftwo 2 M_sun pulsars. While the first is a schematic one, the second one isbased on a QCD motivated nonlocal PNJL model with density-dependent vectorcoupling strength. Both models support the possibility of so called twincompact stars which have the same mass but different radius and internalstructure at high mass (~2 M_sun), provided they exhibit a large jump \Delta\epsilon in the energy density of the first order phase transition fulfilling\Delta \epsilon/\epsilon_crit > 0.6. We conclude that the measurement ofhigh-mass twin stars would support the existence of a first order phasetransition in symmetric matter at zero temperature entailing the existence of acritical end point in the QCD phase diagram.
Erscheinungsjahr
Titel des Konferenzbandes
Proceedings, 8th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2013)
Seite
063
Konferenz
8th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2013)
Konferenzort
Napa, CA
Konferenzdatum
2013-03-11 – 2013-03-15
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Blaschke D, Alvarez-Castillo DE, Benic S. Mass-radius constraints for compact stars and a critical endpoint. In: Proceedings, 8th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2013). 2013: 063.
Blaschke, D., Alvarez-Castillo, D. E., & Benic, S. (2013). Mass-radius constraints for compact stars and a critical endpoint. Proceedings, 8th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2013), 063
Blaschke, D., Alvarez-Castillo, D. E., and Benic, S. (2013). “Mass-radius constraints for compact stars and a critical endpoint” in Proceedings, 8th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2013) 063.
Blaschke, D., Alvarez-Castillo, D.E., & Benic, S., 2013. Mass-radius constraints for compact stars and a critical endpoint. In Proceedings, 8th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2013). pp. 063.
D. Blaschke, D.E. Alvarez-Castillo, and S. Benic, “Mass-radius constraints for compact stars and a critical endpoint”, Proceedings, 8th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2013), 2013, pp.063.
Blaschke, D., Alvarez-Castillo, D.E., Benic, S.: Mass-radius constraints for compact stars and a critical endpoint. Proceedings, 8th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2013). p. 063. (2013).
Blaschke, David, Alvarez-Castillo, David E., and Benic, Sanjin. “Mass-radius constraints for compact stars and a critical endpoint”. Proceedings, 8th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2013). 2013. 063.

Open Data PUB

arXiv: 1310.3803

Inspire: 1258374