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Title: Constraining neutron star matter with quantum chromodynamics

Abstract

In recent years, there have been several successful attempts to constrain the equation of state of neutron star matter using input from low-energy nuclear physics and observational data. We demonstrate that significant further restrictions can be placed by additionally requiring the pressure to approach that of deconfined quark matter at high densities. Remarkably, the new constraints turn out to be highly insensitive to the amount—or even presence—of quark matter inside the stars.

Authors:
 [1]; ;  [2];  [3]
  1. Physics Department, Theory Unit, CERN, CH-1211 Genève 23 (Switzerland)
  2. Institute for Theoretical Physics, Goethe University, D-60438 Frankfurt am Main (Germany)
  3. Department of Physics and Helsinki Institute of Physics, P.O. Box 64, FI-00014 University of Helsinki (Finland)
Publication Date:
OSTI Identifier:
22365663
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 789; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; DENSITY; EQUATIONS OF STATE; NEUTRON STARS; NEUTRONS; QUANTUM CHROMODYNAMICS; QUARK MATTER

Citation Formats

Kurkela, Aleksi, Fraga, Eduardo S., Schaffner-Bielich, Jürgen, and Vuorinen, Aleksi. Constraining neutron star matter with quantum chromodynamics. United States: N. p., 2014. Web. doi:10.1088/0004-637X/789/2/127.
Kurkela, Aleksi, Fraga, Eduardo S., Schaffner-Bielich, Jürgen, & Vuorinen, Aleksi. Constraining neutron star matter with quantum chromodynamics. United States. doi:10.1088/0004-637X/789/2/127.
Kurkela, Aleksi, Fraga, Eduardo S., Schaffner-Bielich, Jürgen, and Vuorinen, Aleksi. Thu . "Constraining neutron star matter with quantum chromodynamics". United States. doi:10.1088/0004-637X/789/2/127.
@article{osti_22365663,
title = {Constraining neutron star matter with quantum chromodynamics},
author = {Kurkela, Aleksi and Fraga, Eduardo S. and Schaffner-Bielich, Jürgen and Vuorinen, Aleksi},
abstractNote = {In recent years, there have been several successful attempts to constrain the equation of state of neutron star matter using input from low-energy nuclear physics and observational data. We demonstrate that significant further restrictions can be placed by additionally requiring the pressure to approach that of deconfined quark matter at high densities. Remarkably, the new constraints turn out to be highly insensitive to the amount—or even presence—of quark matter inside the stars.},
doi = {10.1088/0004-637X/789/2/127},
journal = {Astrophysical Journal},
number = 2,
volume = 789,
place = {United States},
year = {Thu Jul 10 00:00:00 EDT 2014},
month = {Thu Jul 10 00:00:00 EDT 2014}
}