activity
20112026
most citedMagnetic field-dependence of the neutral pion mass in the linear sigma model coupled to quarks: The weak field case

57 citations · 199 across the 12 of their papers we have counts for

collaborators

14 papers

hep-ph2026

Thermomagnetic enhancement of conserved-charge correlations in a lattice-constrained PNJL model

Bruno S. Lopes, Arthur E. B. Pasqualotto, Jandir J. Buttenbender Filho +2

Conserved-charge correlations offer a promising probe of magnetic fields in strongly interacting matter. We investigate their magnetic response and the finite-density equation of s…

hep-ph2026

Dense and Cold Magnetized Quark Matter: A Review of Magnetic-Field-Independent Regularization and the Medium Separation Scheme

Francisco X. Azeredo, Dyana C. Duarte, Ricardo L. S. Farias +3

We present a comprehensive review of regularization schemes for magnetized dense quark matter within effective models of quantum chromodynamics, focusing on the Magnetic-Field-Inde…

hep-ph2026

Chiral first order phase transition at finite baryon density and zero temperature from self-consistent pole masses in the linear sigma model with quarks

Alejandro Ayala, Bruno El-Bennich, Ricardo L. S. Farias +4

We use the two-flavor Linear Sigma Model with quarks as an effective description of QCD to investigate the nature of the chiral phase transition at finite baryon chemical potential…

hep-ph2026

Violation of the Conformal Limit at Finite Density: Insights from Effective Models and Lattice QCD

Francisco X. Azeredo, Arthur E. B. Pasqualotto, Bruno S. Lopes +2

In this work, we discuss recent results obtained with the application of the medium separation scheme (MSS) in different contexts where a clear violation of the conformal limit for…

hep-ph2026★ 3 cited

Medium separation scheme effects on the magnetized and cold two-flavor superconducting quark matter

Francisco X. Azeredo, Dyana C. Duarte, Ricardo L. S. Farias

We analyze the impact of the Medium Separation Scheme (MSS) on two-flavor color superconducting (2SC) dense quark matter under the influence of a constant external magnetic field.…

hep-ph2025★ 5 cited

Speed of sound peak in isospin QCD: a natural prediction of the Medium Separation Scheme

Bruno S. Lopes, Dyana C. Duarte, Ricardo L. S. Farias +1

We present predictions for the zero-temperature equation of state at finite isospin density using the Nambu-Jona-Lasinio (NJL) model within the medium separation scheme (MSS) -- a…

hep-ph2024★ 8 cited

On the origin of the peak of the sound velocity for isospin imbalanced strongly interacting matter

Alejandro Ayala, Bruno S. Lopes, Ricardo L. S. Farias +1

We study the properties of a system composed of strongly interacting matter with an isospin imbalance, using as an effective description of QCD the two-flavor Linear Sigma Model wi…

hep-ph2024★ 3 cited

Approaching the conformal limit of quark matter with different chemical potentials

Connor Brown, Veronica Dexheimer, Rafael Bán Jacobsen +1

We study in detail the influence of different chemical potentials (baryon, charged, strange, and neutrino) on how and how fast a free gas of quarks in the zero-temperature limit re…

hep-ph2023★ 10 cited

Magnetic field dependence of the neutral pion longitudinal screening mass in the linear sigma model with quarks

Alejandro Ayala, Ricardo L. S. Farias, L. A. Hernández +4

We use the linear sigma model with quarks to study the magnetic-field-induced modifications on the longitudinal screening mass for the neutral pion at one-loop level. The effects o…

hep-ph2023★ 8 cited

Describing the speed of sound peak of isospin-asymmetric cold strongly interacting matter using effective models

Alejandro Ayala, Bruno S. Lopes, Ricardo L. S. Farias +1

The non-monotonic behavior of the speed of sound for isospin imbalanced strongly interacting matter, found by recent lattice QCD simulations, can be reproduced within the Nambu--Jo…

hep-ph2018★ 57 cited

Magnetic field-dependence of the neutral pion mass in the linear sigma model coupled to quarks: The weak field case

Alejandro Ayala, Ricardo L. S. Farias, S. Hernandez-Ortiz +3

We compute the neutral pion mass dependence on a magnetic field in the weak field approximation at one-loop order. The calculation is carried out within the linear sigma model coup…

hep-ph2016★ 50 cited

Thermodynamics of quark matter with a chiral imbalance

R. L. S. Farias, Dyana C. Duarte, Gastão Krein +1

We show how a scheme of rewriting a divergent momentum integral can conciliate results obtained with the Nambu--Jona-Lasinio model and recent lattice results for the chiral transit…

cond-mat.other2011★ 13 cited

Superfluidity in Two-Dimensional Imbalanced Fermi Gases

Heron Caldas, A. L. Mota, R. L. S. Farias +1

We study the zero temperature ground state of a two-dimensional atomic Fermi gas with chemical potential and population imbalance in the mean-field approximation. All calculations…

hep-ph2011★ 42 cited

Optimized perturbation theory for charged scalar fields at finite temperature and in an external magnetic field

D. C. Duarte, R. L. S. Farias, Rudnei O. Ramos

Symmetry restoration in a theory of a self-interacting charged scalar field at finite temperature and in the presence of an external magnetic field is examined. The effective poten…