308 citations · 3.2k across the 96 of their papers we have counts for
73 papers · 1 filter
Transport coefficients of chiral fluid dynamics using low-energy effective models
Pedro Nogarolli, Gabriel S. Denicol, Eduardo S. Fraga
We investigate the first-order transport coefficients of a fluid made of quasiparticles with a temperature-dependent mass extracted from chiral models. We describe this system usin…
SU(3) parity doubling in cold neutron star matter
Eduardo S. Fraga, Rodrigo da Mata, Jürgen Schaffner-Bielich
We present a phenomenological model to investigate the chiral phase transition characterized by parity doubling in dense, beta equilibrated, cold matter. Our model incorporates eff…
Hot perturbative QCD in a very strong magnetic background
Eduardo S. Fraga, Letícia F. Palhares, Tulio E. Restrepo
We compute the pressure, chiral condensate and strange quark number susceptibility from first principles within perturbative QCD at finite temperature and very high magnetic fields…
Analytic approach to axion-like-particle emission in core-collapse supernovae
Ana Luisa Foguel, Eduardo S. Fraga
We investigate the impact of a presumed axion-like-particle (ALP) emission in a core-collapse supernova explosion on neutrino luminosities and mean energies employing a relatively…
Strange magnetars admixed with fermionic dark matter
Osvaldo Ferreira, Eduardo S. Fraga
We discuss strange stars admixed with fermionic dark matter in the presence of a strong magnetic field using the two-fluid Tolman-Oppenheimer-Volkov equations. We describe strange…
Radial oscillations of quark stars admixed with dark matter
José C. Jiménez, Eduardo S. Fraga
We investigated compact stars consisting of cold quark matter and fermionic dark matter treated as two admixed fluids. We computed the stellar structures and fundamental radial osc…
Heavy-quark effects on cold quark matter and self-bound stars
José C. Jiménez, Eduardo S. Fraga
Heavy-quark effects on the equation of state for cold and dense quark matter are obtained from perturbative QCD, yielding observables parametrized only by the renormalization scale…
Radial oscillations in neutron stars from QCD
José C. Jiménez, Eduardo S. Fraga
We study the stability against infinitesimal radial oscillations of neutron stars generated by a set of equations of state obtained from first-principle calculations in cold and de…
Supernovae neutrino detection via coherent scattering off silicon nuclei
Ana Luisa Foguel, Eduardo Souza Fraga, Carla Bonifazi
Low-energy neutrinos are clean messengers from supernovae explosions and probably carry unique insights into the process of stellar evolution. We estimate the expected number of ev…
Cold quark matter with heavy quarks and the stability of charm stars
José C. Jiménez, Eduardo S. Fraga
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 renormal…
Radial oscillations of quark stars from perturbative QCD
José C. Jiménez, Eduardo S. Fraga
We perform the general relativistic stability analysis against radial oscillations of unpaired quark stars obtained using the equation of state for cold quark matter from perturbat…
Surface tension of dense matter at the chiral phase transition
Eduardo S. Fraga, Maurício Hippert, Andreas Schmitt
If a first-order phase transition separates nuclear and quark matter at large baryon density, an interface between these two phases has a nonzero surface tension. We calculate this…
Lepton-rich cold quark matter
J. C. Jiménez, E. S. Fraga
We explore protoneutron star matter in the framework of cold and dense QCD using the state-of-the-art perturbative equation of state including neutrinos fixed by a lepton fraction…
New class of compact stars: Pion stars
Bastian B. Brandt, Gergely Endrodi, Eduardo S. Fraga +3
We investigate the viability of a new type of compact star whose main constituent is a Bose-Einstein condensate of charged pions. Several different setups are considered, where a g…
Lepton-rich cold QCD matter in protoneutron stars
J. C. Jiménez, E. S. Fraga
We investigate protoneutron star matter using the state-of-the-art perturbative equation of state for cold and dense QCD in the presence of a fixed lepton fraction in which both el…
Features of the QCD phase diagram from small, noisy, fluctuating systems
Eduardo S. Fraga, Maurício Hippert
Current heavy-ion collision experiments might lead to the discovery of a first-order chiral symmetry breaking phase-transition line, ending in a second-order critical point. Nevert…
Multiplicity fluctuations near the QCD critical point
Maurício Hippert, Eduardo S. Fraga
Statistical moments of particle multiplicities in heavy-ion collision experiments are an important probe in the exploration of the phase diagram of strongly interacting matter and,…
Perturbative thermodynamics at nonzero isospin density for cold QCD
Thorben Graf, Juergen Schaffner-Bielich, Eduardo S. Fraga
We use next-to-leading-order in perturbation theory to investigate the effects of a finite isospin density on the thermodynamics of cold strongly interacting matter. Our results in…
Critical versus spurious fluctuations in the search for the QCD critical point
Maurício Hippert, Eduardo S. Fraga, Edivaldo M. Santos
The neighborhood of the QCD chiral critical point is characterized by intense fluctuations of the chiral field which could, in principle, generate pronounced experimental signature…
Nucleating quark droplets in the core of magnetars
Daniel Kroff, Eduardo S. Fraga
To assess the possibility of homogeneous nucleation of quark matter in magnetars, we investigate the formation of chirally symmetric droplets in a cold and dense environment in the…
A search for inverse magnetic catalysis in thermal quark-meson models
E. S. Fraga, B. W. Mintz, J. Schaffner-Bielich
We explore the parameter space of the two-flavor thermal quark-meson model and its Polyakov loop-extended version under the influence of a constant external magnetic field . We…
Semiclassical partition function for the double-well potential
D. Kroff, A. Bessa, C. A. A. de Carvalho +2
We compute the partition function and specific heat for a quantum mechanical particle under the influence of a quartic double-well potential non-perturbatively, using the semiclass…
QCD under extreme conditions: an informal discussion
E. S. Fraga
We present an informal discussion of some aspects of strong interactions under extreme conditions of temperature and density at an elementary level. This summarizes lectures delive…
Thermodynamics of (2+1)-flavor strongly interacting matter at nonzero isospin
Rainer Stiele, Eduardo S. Fraga, Juergen Schaffner-Bielich
We investigate the phase structure of strongly interacting matter at non-vanishing isospin before the onset of pion condensation in the framework of the unquenched Polyakov-Quark-M…