Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Szép, Zs."'
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 constituent quarks and Polyakov loops. We determine the parameters of the Lag
Externí odkaz:
http://arxiv.org/abs/1411.5539
Publikováno v:
Phys.Rev.D90:016014,2014
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. Compared to our earlier article [G. Fejos et al., Phys. Rev. D 80, 0
Externí odkaz:
http://arxiv.org/abs/1404.4426
Publikováno v:
Phys.Rev.D84:056001,2011
The set of coupled equations for the self-consistent propagator and the field expectation value is solved numerically with high accuracy in Euclidean space at zero temperature and in the broken symmetry phase of the phi^4 model. Explicitly finite equ
Externí odkaz:
http://arxiv.org/abs/1105.4124
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, on the homogeneous background of a temporal gauge field, diagonal in
Externí odkaz:
http://arxiv.org/abs/1012.5855
Autor:
Jakovac, A., Szep, Zs.
Publikováno v:
Phys.Rev.D82:125038,2010
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 strange mass value, the strange sector as well as the \eta-a_0 sector
Externí odkaz:
http://arxiv.org/abs/1007.2877
Publikováno v:
Phys.Rev.D82:065021,2010
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 is solved at finite temperature and quark baryon chemical potential m
Externí odkaz:
http://arxiv.org/abs/1006.0212
Publikováno v:
Phys.Rev.D80:025015,2009
A fully explicit renormalized quantum action functional is constructed for the O(N)-model in the auxiliary field formulation at next-to-leading order (NLO) of the 1/N expansion. Counterterms are consistently and explicitly derived for arbitrary const
Externí odkaz:
http://arxiv.org/abs/0902.0473
Autor:
Patkos, A., Szep, Zs.
A concise method is presented for the non-perturbative computation of the counterterms renormalising 2PI-actions. The procedure is presented for a real scalar field up to lambda^2 order in the skeleton truncation of Gamma_2PI with respect to the self
Externí odkaz:
http://arxiv.org/abs/0809.3551
Autor:
Patkos, A., Szep, Zs.
Publikováno v:
Nucl.Phys.A811:329-352,2008
Explicit counterterm construction is presented in a symmetry breaking background for the 2PI effective action of the self-interacting one-component scalar field including skeleton diagrams to O(\lambda^2). The applied strategy is an extension of our
Externí odkaz:
http://arxiv.org/abs/0806.2554
Publikováno v:
Nucl.Phys.A803:115-135,2008
Non-perturbative renormalisation of a general class of scalar field theories is performed at the Hartree level truncation of the 2PI effective action in the broken symmetry regime. Renormalised equations are explicitly constructed for the one- and tw
Externí odkaz:
http://arxiv.org/abs/0711.2933