100 citations · 278 across the 13 of their papers we have counts for
15 papers
Functional renormalization group study of the quark-meson model beyond the local potential approximation: Kurganov--Tadmor versus the grid method
Zsolt Szép, György Wolf
We solve the functional renormalization group flow of the two-flavor quark-meson model at finite temperature and quark chemical potential with Litim's regulator, using the Kurganov…
One-loop constituent quark contributions to the vector and axial-vector meson curvature mass
Győző Kovács, Péter Kovács, Zsolt Szép
The renormalized contribution of fermions to the curvature masses of vector and axial-vector mesons is derived with two different methods at leading order in the loop expansion app…
Apparent convergence of Padé approximants for the crossover line in finite density QCD
Attila Pásztor, Zsolt Szép, Gergely Markó
We propose a novel Bayesian method to analytically continue observables to real baryochemical potential in finite density QCD. Taylor coefficients at and data at imag…
Compact star properties from an extended linear sigma model
János Takátsy, Péter Kovács, Zsolt Szép +1
The equation of state provided by effective models of strongly interacting matter should comply with the restrictions imposed by current astrophysical observations of compact stars…
The model as an effective light meson theory: A lattice-continuum comparison
Gergely Markó, Zsolt Szép
We investigate the possibility of using the 4 dimensional symmetric model as an effective theory for the sigma-pion system. We carry out lattice Monte Carlo simulation…
Padé approximants and analytic continuation of Euclidean Phi-derivable approximations
Gergely Markó, Urko Reinosa, Zsolt Szép
We investigate the Padé approximation method for the analytic continuation of numerical data and its ability to access, from the Euclidean propagator, both the spectral function an…
Loss of solution in the symmetry improved Phi-derivable expansion scheme
Gergely Markó, Urko Reinosa, Zsolt Szép
We consider the two-loop Phi-derivable approximation for the O(2)-symmetric scalar model, augmented by the symmetry improvement introduced in [A. Pilaftsis and D. Teresi, Nucl. Phy…
Existence of the critical endpoint in the vector meson extended linear sigma model
Peter Kovács, Zsolt Szép, György Wolf
The chiral phase transition of the strongly interacting matter is investigated at nonzero temperature and baryon chemical potential mu_B within an extended (2+1) flavor Polyakov co…
The O(N)-model within the Phi-derivable expansion to order lambda^2: on the existence, UV and IR sensitivity of the solutions to self-consistent equations
Gergely Markó, Urko Reinosa, Zsolt Szép
We discuss various aspects of the O(N)-model in the vacuum and at finite temperature within the Phi-derivable expansion scheme to order lambda^2. In continuation to an earlier work…
Chiral phase transition in the vector meson extended linear sigma model
Péter Kovács, Zsolt Szép, György Wolf
In the framework of an SU(3) (axial)vector meson extended linear sigma model with additional constituent quarks and Polyakov loops, we investigate the effects of (axial)vector meso…
Chiral phase transition in an extended linear sigma model: initial results
Gy. Wolf, P. Kovács, Zs. Szép
We investigate the scalar meson mass dependence on the chiral phase transition in the framework of an SU(3), (axial)vector meson extended linear sigma model with additional constit…
Bose-Einstein condensation and Silver Blaze property from the two-loop -derivable approximation
Gergely Markó, Urko Reinosa, Zsolt Szép
We extend our previous investigation of the two-loop -derivable approximation to finite chemical potential and discuss Bose-Einstein condensation (BEC) in the case of a char…
Thermodynamics and phase transition of the O(N) model from the two-loop Phi-derivable approximation
Gergely Markó, Urko Reinosa, Zsolt Szép
We discuss the thermodynamics of the O(N) model across the corresponding phase transition using the two-loop Phi-derivable approximation of the effective potential and compare our…
Broken phase effective potential in the two-loop Phi-derivable approximation and nature of the phase transition in a scalar theory
Gergely Markó, Urko Reinosa, Zsolt Szép
We study the phase transition of a real scalar phi^4 theory in the two-loop Phi-derivable approximation using the imaginary time formalism, extending our previous (analytical) disc…
A critical look at the role of the bare parameters in the renormalization of Phi-derivable approximations
Urko Reinosa, Zsolt Szép
We revisit the renormalization of Phi-derivable approximations from a slightly different point of view than the one which is usually followed in previous works. We pay particular a…