On the deconfinement phase transition in neutron-star mergers
Abstract
We study in detail the nuclear aspects of a neutron-star merger in which deconfinement to quark matter takes place. For this purpose, we make use of the Chiral Mean Field (CMF) model, an effective relativistic model that includes self-consistent chiral symmetry restoration and deconfinement to quark matter and, for this reason, predicts the existence of different degrees of freedom depending on the local density/chemical potential and temperature. We then use the out-of-chemical-equilibrium finite-temperature CMF equation of state in full general-relativistic simulations to analyze which regions of different QCD phase diagrams are probed and which conditions, such as strangeness and entropy, are generated when a strong first-order phase transition appears. We also investigate the amount of electrons present in different stages of the merger and discuss how far from chemical equilibrium they can be and, finally, draw some comparisons with matter created in supernova explosions and heavy-ion collisions.
Additional Information
© The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. Open Access funding provided by Projekt DEAL. Support for this research comes in part from PHAROS (COST Action CA16214), the LOEWE-Program in HIC for FAIR, the European Union's Horizon 2020 Research and Innovation Programme (Grant 671698; call FETHPC-1-2014, project ExaHyPE), the ERC Synergy Grant "BlackHoleCam: Imaging the Event Horizon of Black Holes" (Grant No. 610058), and the National Science Foundation under grant PHY-1748621. HS also acknowledges the Judah M.-Eisenberg-Laureatus Professorship at the Fachbereich Physik at Goethe University. The simulations were performed on the SuperMUC cluster at the LRZ in Garching, on the LOEWE cluster in CSC in Frankfurt, and on the HazelHen cluster at the HLRS in Stuttgart.Attached Files
Published - s10050-020-00073-4.pdf
Files
| Name | Size | Download all |
|---|---|---|
|
md5:e813b74407db852f971c49d1a2a3afe0
|
1.6 MB | Preview Download |
Additional details
- Eprint ID
- 121227
- Resolver ID
- CaltechAUTHORS:20230501-297392000.47
- CA16214
- European Cooperation in Science and Technology (COST)
- Helmholtz International Center for FAIR
- 671698
- European Research Council (ERC)
- 610058
- European Research Council (ERC)
- PHY-1748621
- NSF
- Projekt DEAL
- Goethe University
- Created
-
2023-05-04Created from EPrint's datestamp field
- Updated
-
2023-05-04Created from EPrint's last_modified field