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Speed of sound and isothermal compressibility in a magnetized quark matter with anomalous magnetic moment of quarks

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arxiv 2408.04398 v1 pith:BCCA23DL submitted 2024-08-08 hep-ph nucl-th

Rajkumar Mondal , Sourav Duari , Nilanjan Chaudhuri , Sourav Sarkar , Pradip Roy This is my paper
classification hep-phnucl-th
keywords magneticfieldcompressibilityisothermalparallelperpendicularquarkmatter
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We study the characteristics of quark matter under the influence of a background magnetic field with anomalous magnetic moment (AMM) of quarks at finite temperature and quark chemical potential in the framework of Polyakov loop extended Nambu Jona-Lasinio (PNJL) model. In presence of a magnetic field, the speed of sound and isothermal compressibility become anisotropic with respect to the direction of the background magnetic field, splitting into parallel and perpendicular directions with respect to the magnetic field. Though the qualitative nature of parallel and perpendicular components of squared speed of sound appear similar, they differ in magnitude at lower values of temperature. The parallel and perpendicular components of isothermal compressibility decrease with increasing temperature, indicating a trend towards increased incompressible strongly interacting matter. On inclusion of the AMM of quarks, the perpendicular component of isothermal compressibility becomes greater than the parallel component. Additionally, we investigate the quark number susceptibility normalized by its value at zero magnetic field, which may indicate the presence of magnetic fields in the system.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Functional renormalization group study of anomalous magnetic moment in a low energy effective theory

    hep-ph 2025-06 conditional novelty 6.0 of 10

    In a magnetized two-flavor effective theory, quark anomalous magnetic moments are dynamically generated with chiral symmetry breaking, with the down quark moment roughly four times the up quark.

  2. One-loop HDL thermodynamics of a strongly magnetized isospin asymmetric cold quark matter

    hep-ph 2026-07 conditional novelty 5.0 of 10

    In the lowest Landau level, one-loop HDLpt pressure of cold quark matter grows with quark and isospin chemical potentials, and the magnetization is positive, making transverse pressure smaller than longitudinal.

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