Dense stellar matter with strange quark matter driven by kaon condensation
- Department of Physics, Hanyang University, Seoul 133-791 (Korea, Republic of)
The core of neutron-star matter is supposed to be at a much higher density than the normal nuclear-matter density, for which various possibilities have been suggested, such as, for example, meson or hyperon condensation and/or deconfined quark or color-superconducting matter. In this work, we explore the implication on hadron physics of a dense compact object that has three ''phases'': nuclear matter at the outer layer, kaon condensed nuclear matter in the middle, and strange quark matter at the core. Using a drastically simplified but not unreasonable model, we develop the scenario where the different phases are smoothly connected with the kaon condensed matter playing a role of a ''doorway'' to a quark core, the equation of state of which with parameters restricted within the range allowed by nature could be made compatible with the mass vs radius constraint given by the 1.97-solar-mass object PSR J1614-2230 recently observed.
- OSTI ID:
- 21596797
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 84, Issue 3; Other Information: DOI: 10.1103/PhysRevC.84.035810; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COLOR MODEL
DENSITY
EQUATIONS OF STATE
HYPERONS
KAONS
MASS
NEUTRON STARS
NUCLEAR MATTER
S QUARKS
BARYONS
BOSONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
HADRONS
MATHEMATICAL MODELS
MATTER
MESONS
PARTICLE MODELS
PHYSICAL PROPERTIES
PSEUDOSCALAR MESONS
QUARK MODEL
QUARKS
STARS
STRANGE MESONS
STRANGE PARTICLES