Quark mass effects in quark number susceptibilities

Graf, Thorben; Petreczky, Péter

doi:10.1088/1742-6596/832/1/012034

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…6 An exact value for the in-medium charm mass at finite density is still not known, whereas its vacuum mass at some fixed energy scale, m 0 c , can be extracted from lattice calculations. 7 Alternatively, one could choose independent values of Λ when going from N f = 3 to N f = 4, the "transition" point being found by a matching between strong couplings with different N f [38,39].…”

Section: Charm Mattermentioning

confidence: 99%

Cold quark matter with heavy quarks and the stability of charm stars

Jiménez,

Fraga

2019

Preprint

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We study the effects of heavy quarks on the equation of state for cold and dense quark matter obtained from perturbative QCD, yielding observables parametrized only by the renormalization scale. We investigate the behavior of charm quark matter under the constraints of β-equilibrium and electric charge neutrality in a region of densities where perturbative QCD is in principle much more reliable. We also analyze the stability of charm stars, and find that such quark stars are unstable under radial oscillations.

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Section: Charm Mattermentioning

confidence: 99%

Cold quark matter with heavy quarks and the stability of charm stars

Jiménez,

Fraga

2019

Preprint

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“…An exact value for the in-medium charm mass at finite density is still not known, whereas its vacuum mass at some fixed energy scale, m 0 c , can be extracted from lattice calculations 9. Alternatively, one could choose independent values ofΛ when going from N f ¼ 3 to 4, the "transition" point being found by a matching between strong couplings with different N f[10,43].…”

mentioning

confidence: 99%

Cold quark matter with heavy quarks and the stability of charm stars

Jiménez

Fraga

2020

Phys. Rev. D

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We study the effects of heavy quarks on the equation of state for cold and dense quark matter obtained from perturbative QCD, yielding observables parametrized only by the renormalization scale. We investigate the thermodynamics of charm quark matter under the constraints of β equilibrium and electric charge neutrality in a region of densities where perturbative QCD is, in principle, much more reliable. We also analyze the stability of charm stars, which might be realized as a new branch of ultradense hybrid compact stars, and find that such quark stars are unstable under radial oscillations.

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Quark mass effects in quark number susceptibilities

Abstract: Abstract. The quark degrees of freedom of the QGP with special focus on mass effects are investigated. A next-to-leading-order perturbation theory approach with quark mass dependence is applied and compared to lattice QCD results.

Cited by 2 publications

References 10 publications

Cold quark matter with heavy quarks and the stability of charm stars

Cold quark matter with heavy quarks and the stability of charm stars

Cold quark matter with heavy quarks and the stability of charm stars

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