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Nuclear Theory

arXiv:1601.05339 (nucl-th)
[Submitted on 19 Jan 2016]

Title:The Hyperon Puzzle in Neutron Stars

Authors:Ignazio Bombaci
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Abstract:The so called "hyperon puzzle", i.e. the difficulty to reconcile the measured masses of neutron stars (NSs) with the presence of hyperons in their interiors, is one of the hot topics in astrophysics which is stimulating copious experimental and theoretical research in hypernuclear physics. After illustrating the origin of the hyperon puzzle, I discuss some of its possible solutions, and particularly those related to the role of hyperonic two- and three-body interactions on the equation of state of dense matter. Afterward, I discuss a possibility to circumvent the hyperon puzzle allowing for the presence of strangeness in NSs in the form of deconfined strange quark matter, and thus considering the so called quark stars, i.e. hybrid stars or strange stars. Finally I discuss the astrophysical consequences of the possible conversion process of an hadronic star to a quark star.
Comments: Invited keynote talk at the Topical Session "Hyperon puzzle in Neutron Stars" at the 12th International Conference on Hypernuclear and Strange Particle Physics (HYP2015), September 7-12, 2015, Sendai, Japan. arXiv admin note: text overlap with arXiv:1601.04559
Subjects: Nuclear Theory (nucl-th); High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:1601.05339 [nucl-th]
  (or arXiv:1601.05339v1 [nucl-th] for this version)
  https://doi.org/10.48550/arXiv.1601.05339
Related DOI: https://doi.org/10.7566/JPSCP.17.101002

Submission history

From: Ignazio Bombaci Prof. [view email]
[v1] Tue, 19 Jan 2016 14:19:15 UTC (50 KB)
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