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QCD Equation of State at nonzero baryon density in external magnetic field

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arxiv 2403.07783 v2 pith:LNAEAJTZ submitted 2024-03-12 hep-lat hep-phhep-thnucl-th

N. Astrakhantsev , V. V. Braguta , A. Yu. Kotov , A. A. Roenko This is my paper · ORCID
classification hep-lathep-phhep-thnucl-th
keywords baryoncoefficientsfieldmagneticnonzerochemicaldensityequation
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

This paper is devoted to the study of QCD equation of state in external magnetic field and nonzero baryon density. Our study is carried out by means of lattice simulation with 2+1 dynamical staggered quarks at the physical masses. The simulation is conducted at imaginary baryon chemical potential what allowed us to overcome the sign problem. We expand the pressure in the baryon imaginary chemical potential and study three leading nonzero coefficients in this expansion. These coefficients were calculated for the following values of magnetic field: $eB=0.3$, $0.6$, $1.2$ GeV$^2$ with the lattice sizes $8\times32^3$, $10\times40^3$, $12\times48^3$. Using these data we take continuum limit for the coefficients. Our results indicate considerable enhancement of the expansion coefficients by the magnetic field.

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Cited by 6 Pith papers

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

  1. Leading-Order QCD Equation of State in Strong Magnetic Fields at Nonzero Baryon Chemical Potential

    hep-lat 2025-08 conditional novelty 6.0 of 10

    Continuum-estimated leading-order EoS coefficients in magnetized strangeness-neutral QCD at nonzero baryon chemical potential show temperature-band crossings in q1 and P2 and a possible sign change of the trace anomal...

  2. The Roberge-Weiss endpoint in $(2+1)$-flavor QCD with background magnetic fields

    hep-lat 2024-12 conditional novelty 6.0 of 10

    A background magnetic field lowers the Roberge-Weiss temperature in (2+1)-flavor QCD and turns the transition from second to first order between eB=1.0 and 2.5 GeV^2.

  3. 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.

  4. QCD Equation of State with Strong Magnetic Fields and Nonzero Baryon Density

    hep-lat 2025-02 conditional novelty 4.0 of 10

    Lattice QCD continuum estimates of leading-order baryon-density Taylor coefficients of the magnetized QCD equation of state show deviations from hadron gas and approach to a free gas at strong fields.

  5. Dense and magnetized QCD from imaginary chemical potential

    hep-lat 2025-02 conditional novelty 4.0 of 10

    First 2+1+1 flavor lattice QCD results for the leading-order dense QCD equation of state in a magnetic field, along the strangeness-neutral, isospin-asymmetric trajectory, suggesting strong magnetic effects near the c...

  6. Hot and dense pQCD in a very strong magnetic background

    hep-ph 2025-09 conditional novelty 3.0 of 10

    Two-loop lowest-Landau-level perturbative QCD with an adopted running scale roughly matches lattice data at high temperature and predicts slightly smaller maximum masses for quark magnetars than the simple bag model.

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