QCD equations of state in hadron-quark continuity

Toru Kojo

doi:10.3390/universe4020042

QCD equations of state in hadron-quark continuity

Toru Kojo

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The properties of dense matter in quantum chromodynamics (QCD) are delineated through equations of state constrained by the neutron star observations. The two solar mass constraint, the radius constraint of '11-13 km, and the causality constraint on the speed of sound, are used to develop the picture of hadron-quark continuity in which hadronic matter continuously transforms into quark matter. A unified equation of state at zero temperature and β-equilibrium is constructed by a phenomenological interpolation between nuclear and quark matter equations of state.

Original language	English
Article number	42
Journal	Universe
Volume	4
Issue number	2
DOIs	https://doi.org/10.3390/universe4020042
Publication status	Published - 2018 Feb
Externally published	Yes

Keywords

Hadron-quark continuity
Neutron stars
QCD phase diagram

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.3390/universe4020042

Cite this

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title = "QCD equations of state in hadron-quark continuity",

abstract = "The properties of dense matter in quantum chromodynamics (QCD) are delineated through equations of state constrained by the neutron star observations. The two solar mass constraint, the radius constraint of '11-13 km, and the causality constraint on the speed of sound, are used to develop the picture of hadron-quark continuity in which hadronic matter continuously transforms into quark matter. A unified equation of state at zero temperature and β-equilibrium is constructed by a phenomenological interpolation between nuclear and quark matter equations of state.",

keywords = "Hadron-quark continuity, Neutron stars, QCD phase diagram",

author = "Toru Kojo",

note = "Funding Information: Acknowledgments: The author thanks Gordon Baym, Kenji Fukushima, Tetsuo Hatsuda, Phillip Powell, Yifan Song, Tatsuyuki Takatsuka for collaboration, and D. Blaschke for information about references for neutron star radii. T.K. is grateful for the workshop organizers and participants who made this workshop very enjoyable. This work is supported by an NSFC grant 11650110435. Publisher Copyright: {\textcopyright} 2018 by the author.",

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doi = "10.3390/universe4020042",

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N2 - The properties of dense matter in quantum chromodynamics (QCD) are delineated through equations of state constrained by the neutron star observations. The two solar mass constraint, the radius constraint of '11-13 km, and the causality constraint on the speed of sound, are used to develop the picture of hadron-quark continuity in which hadronic matter continuously transforms into quark matter. A unified equation of state at zero temperature and β-equilibrium is constructed by a phenomenological interpolation between nuclear and quark matter equations of state.

AB - The properties of dense matter in quantum chromodynamics (QCD) are delineated through equations of state constrained by the neutron star observations. The two solar mass constraint, the radius constraint of '11-13 km, and the causality constraint on the speed of sound, are used to develop the picture of hadron-quark continuity in which hadronic matter continuously transforms into quark matter. A unified equation of state at zero temperature and β-equilibrium is constructed by a phenomenological interpolation between nuclear and quark matter equations of state.

KW - Hadron-quark continuity

KW - Neutron stars

KW - QCD phase diagram

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JO - Universe

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ER -

QCD equations of state in hadron-quark continuity

Abstract

Keywords

ASJC Scopus subject areas

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