Anisotropy in the equation of state of strongly magnetized quark matter within the Nambu–Jona-Lasinio model

Avancini, S. S.; Dexheimer, V.; Farias, Ricardo L. S.; Timóteo, V. S.

doi:10.1103/physrevc.97.035207

Cited by 26 publications

(20 citation statements)

References 64 publications

(98 reference statements)

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“…Actually, within the density range shown in the figure, only the hadronic and a mixed phase are visible, whereas the pure quark phase is present only at higher densities. In the present model, no pure quark The effect of magnetic field on the quark matter EoS in the NJL model discussed in [56] and the mCFL model discussed in [57].…”

Section: Effect On the Equation Of Statementioning

confidence: 82%

“…2. The first one [56] uses the Nambu-Jona-Lasinio (NJL) model without pairing interaction, whereas for the second one a simple massless three-flavor MIT bag model was applied, including a pairing interaction of NJL-type to account for the possibility of colour superconductivity in the so-called magnetic colour-flavor locked state (mCFL) [57], see also [26]. The most favored phase of QCD at high densities is the colour-flavor-locked (CFL) superconducting phase and, for a magnetic field strength of the order of the quark energy gap, such a mCFL phase is preferred.…”

Section: Effect On the Equation Of Statementioning

confidence: 99%

“…Fig.2. The effect of magnetic field on the quark matter EoS in the NJL model discussed in[56] and the mCFL model discussed in[57].…”

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confidence: 99%

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Structure of ultra-magnetised neutron stars

Chatterjee,

Novak,

Oertel

2021

Preprint

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In this review we discuss self-consistent methods to calculate the global structure of strongly magnetised neutron stars within the general-relativistic framework. We outline why solutions in spherical symmetry cannot be applied to strongly magnetised compact stars, and elaborate on a consistent formalism to compute rotating magnetised neutron star models. We also discuss an application of the above full numerical solution for studying the influence of strong magnetic fields on the radius and crust thickness of magnetars. The above technique is also applied to construct a "universal" magnetic field profile inside the neutron star, that may be useful for studies in nuclear physics. The methodology developed here is particularly useful to interpret multi-messenger astrophysical data of strongly magnetised neutron stars.

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Section: Effect On the Equation Of Statementioning

confidence: 82%

Section: Effect On the Equation Of Statementioning

confidence: 99%

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Structure of ultra-magnetised neutron stars

Chatterjee,

Novak,

Oertel

2021

Preprint

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“…It is widely known that the strong magnetic fields can have significant impact on the thermodynamic properties of quark matter. Importantly, the breaking of the rotational symmetry produces the anisotropic structure, with the parallel pressure P and the perpendicular pressure P ⊥ in directions along and transverse to the magnetic field respectively [9,[46][47][48][49],…”

Section: Thermodynamics Of Magnetized Quark Matter In Su(2) Njl Modelmentioning

confidence: 99%

The compressibility of quark matter under strong magnetic field in the NJL model

Yang,

Wen

2021

Preprint

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The compressibility of magnetized quark matter is investigated in the SU(2) NJL model. The increases of the chemical potential and the temperature can reduce the compressibility, and lead to the much stiffer equation of state. The variation of the compressibility with the magnetic field will depend on the phase region. Due to the anisotropic structure, the compressibility is different in the directions parallel and perpendicular to the field. The discontinuity of longitudinal compressibility with the chemical potential and the temperature captures the signature of a first-order chiral phase transition and the crossover at high temperature. Moreover, the magnetic-field-and-temperature running coupling would have an important effect on the position of the phase transition. Under the lowest landau level approximation at zero temperature, the longitudinal compressibility has a direct inverse proportional relation to the magnetic field strength and the chemical potential square as κ LLL,χ ∝ 1/(eBµ 2 ).

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“…The study of the equation of state of magnetized QGP is relevant in the contexts of cosmology [37] and strongly magnetized neutron stars too [38][39][40][41][42]. The investigation of the behavior of magnetized QGP is, therefore, of importance [43]. There are different approaches to studying the effect of magnetic fields on QGP [8,16,[44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Thermomagnetic properties and Debye screening for magnetized quark-gluon plasma using the extended self-consistent quasiparticle model

Koothottil

Bannur

2020

Phys. Rev. C

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The thermomagnetic behavior of quark-gluon plasma has recently received a great deal of attention. In this work we make use of the extended self-consistent quasiparticle model to study the thermodynamic properties, magnetic response, and screening properties of magnetized (2+1)-flavor quark-gluon plasma (QGP). The system is considered as a noninteracting system of quasiparticles with masses depending on both temperature and magnetic fields. This allows us to obtain the equation of state of the system and other thermodynamic properties such as the speed of sound. We use the extended self-consistent model to obtain the magnetization and show that QGP has a paramagnetic nature. In addition, we study the pressure anisotropy and calculate the transverse pressure. The obtained anisotropic pressure may be used in hydrodynamic studies of magnetized QGP produced in heavy-ion collisions. We then study the total pressure in both directions, taking pure-field contributions into consideration. Finally we examine the screening properties of magnetized QGP in the longitudinal direction by calculating the Debye screening mass. We go on to compare our results for Debye mass with the results from other approaches.

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Anisotropy in the equation of state of strongly magnetized quark matter within the Nambu–Jona-Lasinio model

Cited by 26 publications

References 64 publications

Structure of ultra-magnetised neutron stars

Structure of ultra-magnetised neutron stars

The compressibility of quark matter under strong magnetic field in the NJL model

Thermomagnetic properties and Debye screening for magnetized quark-gluon plasma using the extended self-consistent quasiparticle model

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