233 citations · 581 across the 42 of their papers we have counts for
30 papers · 1 filter
Range of topological fluctuations in the three-flavor linear sigma model
G. Fejos, A. Patkos
The topological charge density two-point function is computed in a three-flavor effective linear meson model, including contributions from topological sectors with arbitrary charge…
Electromagnetic energy transfer processes in Effective Electro-Magneto Dynamics of axions
Andras Patkos
Oscillating and dissipative energy exchange between the electromagnetic and axion fields is investigated in an effective electro-magneto dynamical (EEMD) model theory, implying the…
Electromagnetic energy loss of axion stars
Andras Patkos
The rate of energy exchange of spatially localized and gravitationally bound axion configurations with electromagnetic radiation is investigated in presence of strong static magnet…
Radiation backreaction in axion electrodynamics
Andras Patkos
Energy-momentum conservation of classical axion-electrodynamics is carefully analyzed in the Hamiltonian formulation of the theory. The term responsible for the energy transfer bet…
Backreaction of mesonic fluctuations on the axial anomaly at finite temperature
G. Fejos, A. Patkos
The impact of mesonic fluctuations on the restoration of the anomaly is investigated nonperturbatively for three flavors at finite temperature in an effective model settin…
Field dependence of the Yukawa coupling in the three flavor quark-meson model
G. Fejos, A. Patkos
We investigate the renormalization group flow of the field-dependent Yukawa coupling in the framework of the three flavor quark-meson model. In a conventional perturbative calculat…
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…
Finite temperature symmetry restoration in the U_L(3)xU_R(3) linear sigma model from a large-n approximation
G. Fejos, A. Patkos
A recently proposed approximate large-n ground state solution of the U_L(n)xU_R(n) symmetric linear sigma model is investigated at finite temperature. We study the coupled evaporat…
On the evolution of an entangled lepton-neutrino pair
Balazs Meszena, Andras Patkos
The evolution of the entangled muon-neutrino system emerging from charged pion decay is explored both in vacuum and in matter. The study is based on a Weisskopf-Wigner type wave-pa…
A renormalized large-n solution of the U(n) x U(n) linear sigma model in the broken symmetry phase
G. Fejos, A. Patkos
Dyson-Schwinger equations for the U(n) x U(n) symmetric matrix sigma model reformulated with two auxiliary fields in a background breaking the symmetry to U(n) are studied in the s…
Non-perturbative construction of counterterms for 2PI-approximation
A. Patkos, Zs. Szep
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…
Counterterm resummation for 2PI-approximation in constant background
A. Patkos, Zs. Szep
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…
Renormalisability of the 2PI-Hartree approximation of multicomponent scalar models in the broken symmetry phase
G. Fejos, A. Patkos, Zs. Szep
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.…
Sensitivity of the chiral phase transition of QCD to the scalar meson sector
T. Herpay, A. Patkos, Zs. Szep
Gribov's theory of light quark confinement implies the existence of two kinds of scalar bound states. The phase diagram of the three-flavor QCD is mapped out in the (m_pi-m_K)-plan…
Mapping the boundary of the first order finite temperature restoration of chiral symmetry in the m_pi-m_K--plane with a linear sigma model
T. Herpay, A. Patkos, Zs. Szep +1
The phase diagram of the three-flavor QCD is mapped out in the low mass corner of the m_pi-m_K--plane with help of the SU_L(3) x SU_R(3) linear sigma model (LSM). A novel zero temp…
Quasi-Particle Excitations of the Higgs Vacuum at Finite Energy Density
A. Patkos, D. Sexty
Real time excitations in the broken symmetry phase of the classical Abelian Higgs model are investigated numerically in the unitary gauge. Spectral equations of state of its consti…
Prethermalisation and the Build Up of the Higgs Effect
D. Sexty, A. Patkos
Real time field excitations in the broken symmetry phase of the classical abelian Gauge+Higgs model are studied numerically in the unitary gauge, for systems starting from the unst…
Analytic determination of the T-μphase diagram of the chiral quark model
A. Jakovac, A. Patkos, Zs. Szep +1
Using a gap equation for the pion mass a nonperturbative method is given for solving the chiral quark-meson model in the chiral limit at the lowest order in the fermion contributio…
Non-Gaussian Finite Temperature Statistics of the Longitudinal Gauge Excitation of the Higgs Vacuum
D. Sexty, A. Patkos
Real time excitations in the broken symmetry phase of the classical Abelian Higgs model are investigated numerically in the unitary gauge. Persistent correlation is detected at fin…
T-μphase diagram of the chiral quark model from a large flavor number expansion
A. Jakovac, A. Patkos, Zs. Szep +1
The chiral phase boundary of strong matter is determined in the T-μplane from the chiral quark model, applying a non-perturbatively renormalised treatment, involving chains of pion…
Universal threshold enhancement
A. Patkos, Zs. Szep, P. Szepfalusy
By assuming certain analytic properties of the propagator, it is shown that universal features of the spectral function including threshold enhancement arise if a pole describing a…
Non-equilibrium Goldstone phenomenon in tachyonic preheating
Sz. Borsanyi, A. Patkos, D. Sexty
The dominance of the direct production of elementary Goldstone waves is demonstrated in tachyonic preheating by numerically determining the evolution of the dispersion relation, th…
Finite temperature spectral functions of the linear O(N)-model at large N applied to the system
A. Patkos, Zs. Szep, P. Szepfalusy
The thermal evolution of the spectral densities derivable from the two-point functions of the elementary and the quadratic composite fields of the O(N) model is studied in the isos…
Effect of the scalar condensate on the linear gauge field response in the Abelian Higgs model
A. Jakovac, A. Patkos, Zs. Szep
The effective equations of motion for low-frequency mean gauge fields in the Abelian Higgs model are investigated in the presence of a scalar condensate, near the high temperature…