65 citations · 501 across the 42 of their papers we have counts for
42 papers
Real effective potentials for phase transitions in models with extended scalar sectors
Károly Seller, Zsolt Szép, Zoltán Trócsanyi
The effective potential obtained by loop expansion is usually not real in the range of field values explored by its minima during a phase transition. We apply the optimized perturb…
Renormalized O(N) model at next-to-leading order of the 1/N expansion: Effects of the Landau pole
G. Fejos, A. Patkos, Zs. Szep
Apparently convergent contributions of resummed perturbative series at the next-to-leading order of the 1/N expansion in the O(N) model are reanalyzed in terms of renormalizability…
Broken phase scalar effective potential and Phi-derivable approximations
Urko Reinosa, Zsolt Szep
We study the effective potential of a real scalar phi^4 theory as a function of the temperature T within the simplest Phi-derivable approximation, namely the Hartree approximation.…
The effect of the Polyakov loop on the chiral phase transition
G. Marko, Zs. Szep
The Polyakov loop is included in the SU(2)_L x SU(2)_R chiral quark-meson model by considering the propagation of the constituent quarks, coupled to the (sigma,pi) meson multiplet,…
Strange mass dependence of the tricritical point in the U(3)_L x U(3)_R chiral sigma model
A. Jakovac, Zs. Szep
We study the strange quark mass dependence of the tricritical point of the U(3)_L x U(3)_R linear sigma model in the chiral limit. Assuming that the tricritical point is at a large…
Influence of the Polyakov loop on the chiral phase transition in the two flavor chiral quark model
G. Marko, Zs. Szep
The SU(2)_L x SU(2)_R chiral quark model consisting of the (sigma,pi) meson multiplet and the constituent quarks propagating on the homogeneous background of a temporal gauge field…