190 citations · 459 across the 31 of their papers we have counts for
6 papers · 1 filter
Singularities in the RG flow
Antal Jakovac
In this work, we show examples when a perturbatively irrelevant operator becomes relevant in the infrared because of the presence of an IR singularity (IR Landau pole). An example…
Bound states in Functional Renormalization Group
A. Jakovac, A. Patkos
Equivalence criteria are established for an effective Yukawa-type theory of composite fields representing two-particle fermion bound states with the original "microscopic" theory o…
Scalar mass stability bound in a simple Yukawa-theory from renormalisation group equations
A. Jakovac, I. Kaposvari, A. Patkos
Functional Renormalisation Group (FRG) equations are constructed for a simple Yukawa-model with discrete chiral symmetry, including also the effect of a nonzero composite fermion b…
Spectral function of the Bloch-Nordsieck model at finite temperature
A. Jakovac, P. Mati
In this paper we determine the exact fermionic spectral function of the Bloch-Nordsieck model at finite temperature. Analytic results are presented for some special parameters, for…
Non-universal lower bound for the shear viscosity to entropy density ratio
A. Jakovac
The lower bound of the shear viscosity to entropy density ratio is examined using an exact representation of the ratio through the density of states. It is shown that the lower bou…
Classical Limit for Scalar Fields at High Temperature
W. Buchmuller, A. Jakovac
We study real-time correlation functions in scalar quantum field theories at temperature . We show that the behaviour of soft, long wavelength modes is determined by classic…