Lectures on renormalization and asymptotic safety
S Nagy - Annals of Physics, 2014 - Elsevier
A short introduction is given on the functional renormalization group method, putting
emphasis on its nonperturbative aspects. The method enables to find nontrivial fixed points …
emphasis on its nonperturbative aspects. The method enables to find nontrivial fixed points …
Monte carlo renormalization flows in the space of relevant and irrelevant operators: Application to three-dimensional clock models
We study renormalization group flows in a space of observables computed by Monte Carlo
simulations. As an example, we consider three-dimensional clock models, ie, the XY spin …
simulations. As an example, we consider three-dimensional clock models, ie, the XY spin …
Spontaneous symmetry breaking and optimization of functional renormalization group
The requirement for the absence of spontaneous symmetry breaking in the d= 1 dimension
has been used to optimize the regulator dependence of functional renormalization group …
has been used to optimize the regulator dependence of functional renormalization group …
Map** a dissipative quantum spin chain onto a generalized Coulomb gas
O Bouverot-Dupuis - arxiv preprint arxiv:2403.06618, 2024 - arxiv.org
An XXZ spin chain at zero magnetization is subject to spatially correlated baths acting as
dissipation. We show that the low-energy excitations of this model are described by a …
dissipation. We show that the low-energy excitations of this model are described by a …
Comparison of renormalization group schemes for sine-Gordon-type models
The scheme dependence of the renormalization group (RG) flow has been investigated in
the local potential approximation for two-dimensional periodic, sine-Gordon type field …
the local potential approximation for two-dimensional periodic, sine-Gordon type field …
Critical exponents of the model in the infrared limit <?format ?>from functional renormalization
S Nagy - Physical Review D—Particles, Fields, Gravitation, and …, 2012 - APS
We determined the critical exponent ν of the scalar O (N) model with a strategy based on the
definition of the correlation length in the infrared limit. The functional renormalization group …
definition of the correlation length in the infrared limit. The functional renormalization group …
Bosonization and functional renormalization group approach in the framework of
I Nándori - Physical Review D—Particles, Fields, Gravitation, and …, 2011 - APS
Known results on two-dimensional quantum electrodynamics (QED 2) have been used to
study the dependence of functional renormalization group equations on renormalization …
study the dependence of functional renormalization group equations on renormalization …
Structure of the broken phase of the sine-Gordon model using functional renormalization
V Pangon - International Journal of Modern Physics A, 2012 - World Scientific
We study in this paper the sine-Gordon model using functional renormalization group at
local potential approximation using different renormalization group (RG) schemes. In d= 2 …
local potential approximation using different renormalization group (RG) schemes. In d= 2 …
The numerically optimized regulator and the functional renormalization group
We aim to optimize the functional form of the compactly supported smooth (CSS) regulator
within the functional renormalization group (RG), in the framework of bosonized two …
within the functional renormalization group (RG), in the framework of bosonized two …
Massless fermions in multiflavor
S Nagy - Physical Review D—Particles, Fields, Gravitation, and …, 2009 - APS
The ground state of the multiflavor two-dimensional quantum electrodynamics is determined
in the presence of finite baryon density, and it is shown that the model possesses two …
in the presence of finite baryon density, and it is shown that the model possesses two …