Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Szép, Zsolt"'
We present a comprehensive study of the finite temperature CP-asymmetry factor needed in the semi-classical treatment of leptogenesis originating from Majorana fermion decays into a lepton and a scalar particle. The imaginary part of the relevant one
Externí odkaz:
http://arxiv.org/abs/2409.07180
Publikováno v:
Phys. Rev. B 108, 165147 (2023)
Scale evolution of interactions between a Weyl fermion and a heavy magnetic impurity is calculated non-perturbatively using the functional renormalization group technique. Using an expansion around the vanishing pairing gap, we derive the flow equati
Externí odkaz:
http://arxiv.org/abs/2306.09975
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 perturbation theory in a fixed gauge to singlet scalar extensions of the Stan
Externí odkaz:
http://arxiv.org/abs/2301.07961
Publikováno v:
Phys. Rev. D 104, 056013 (2021)
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 applied to the (2+1)-flavor constituent quark-meson model. The correspond
Externí odkaz:
http://arxiv.org/abs/2105.12689
Publikováno v:
Phys. Rev. D 103, 034511 (2021)
We propose a novel Bayesian method to analytically continue observables to real baryochemical potential $\mu_B$ in finite density QCD. Taylor coefficients at $\mu_B=0$ and data at imaginary chemical potential $\mu_B^I$ are treated on equal footing. W
Externí odkaz:
http://arxiv.org/abs/2010.00394
Autor:
Markó, Gergely, Szép, Zsolt
Publikováno v:
Phys. Rev. D 100, 056017 (2019)
We investigate the possibility of using the 4 dimensional $O(4)$ symmetric $\phi^4$ model as an effective theory for the sigma-pion system. We carry out lattice Monte Carlo simulations to establish the triviality bound in the case of explicitly broke
Externí odkaz:
http://arxiv.org/abs/1907.07985
Publikováno v:
Universe 5, 174 (2019)
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. Using the equation of state given by the (axial-)vector meson extend
Externí odkaz:
http://arxiv.org/abs/1907.05841
We investigate the Pad\'e approximation method for the analytic continuation of numerical data and its ability to access, from the Euclidean propagator, both the spectral function and part of the physical information hidden in the second Riemann shee
Externí odkaz:
http://arxiv.org/abs/1706.08726
Publikováno v:
Nucl.Phys. B913: 405-424, 2016
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. Phys. B874, 594 (2013)], which enforces Goldstone's theorem in the broken
Externí odkaz:
http://arxiv.org/abs/1604.04193
Publikováno v:
Phys. Rev. D 93, 114014 (2016)
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 constituent quark-meson model which incorporates the effect of the vecto
Externí odkaz:
http://arxiv.org/abs/1601.05291