activity
19952026
most citedImproved lattice operators: the case of the topological charge density

42 citations · 80 across the 14 of their papers we have counts for

collaborators

14 papers

cond-mat.stat-mech2026

Out-of-equilibrium scaling of the particle density in quantum fermionic wires after a critical quenching of the chemical potential

H. Panagopoulos, E. Vicari

We study the out-of-equilibrium scaling behavior of the particle density in quantum fermionic Kitaev wires, after instantaneous quantum quenches (QQs) of the chemical potential wit…

cond-mat.stat-mech2026

Charged Abelian Higgs phase transitions in three-dimensional compact lattice U(1) gauge models with multicharge scalar matter

Claudio Bonati, Filippo Mariani, Ettore Vicari

We consider three-dimensional (3D) lattice Abelian Higgs models, with compact U(1) gauge variables coupled to a doubly-charged -component complex scalar field (CLAH). We focus o…

cond-mat.dis-nn2026

Effects of quenched disorder in three-dimensional lattice gauge Higgs models

Claudio Bonati, Ettore Vicari

We study the effects of uncorrelated quenched disorder to the phase diagram and continuous transitions of three-dimensional lattice gauge Higgs models. For this pur…

cond-mat.dis-nn2026★ 1 cited

Finite-temperature topological transitions in the presence of quenched uncorrelated disorder

Claudio Bonati, Ettore Vicari

We address issues related to the presence of defects at finite-temperature topological transitions, in particular when defects are modeled in terms of further variables associated…

cond-mat.stat-mech2025

Critical dynamics of three-dimensional gauge models and the inverted XY universality class

Claudio Bonati, Haralambos Panagopoulos, Ettore Vicari

We investigate the critical relaxational dynamics of the three-dimensional (3D) lattice gauge models with and , whose equilibrium critical behavior at their topolo…

cond-mat.stat-mech2025

Out-of-equilibrium critical dynamics of the three-dimensional gauge model along critical relaxational flows

Claudio Bonati, Haralambos Panagopoulos, Ettore Vicari

We address the out-of-equilibrium critical dynamics of the three-dimensional lattice gauge model, and in particular the critical relaxational flows arising from ins…

cond-mat.stat-mech2024

Out-of-equilibrium scaling of the energy density along the critical relaxational flow after a quench of the temperature

Haralambos Panagopoulos, Ettore Vicari

We study the out-of-equilibrium behavior of statistical systems along critical relaxational flows arising from instantaneous quenches of the temperature to the critical point $…

hep-th2002★ 1 cited

Free energy and theta dependence of SU(N) gauge theories

L. Del Debbio, H. Panagopoulos, E. Vicari

We study the dependence of the free energy on the CP violating angle theta, in four-dimensional SU(N) gauge theories with N >= 3, and in the large-N limit. Using the Wilson lattice…

hep-lat1999

Resummation of Cactus Diagrams in Lattice QCD, to all Orders

H. Panagopoulos, E. Vicari

We show how to perform a resummation, to all orders in perturbation theory, of a certain class of gauge invariant tadpole-like diagrams in Lattice QCD. These diagrams are often lar…

hep-lat1998★ 15 cited

Resummation of Cactus Diagrams in Lattice QCD

H. Panagopoulos, E. Vicari

We show how to perform a resummation, to all orders in perturbation theory, of a certain class of gauge invariant diagrams in Lattice QCD. These diagrams are often largely responsi…

hep-lat1996★ 1 cited

The 3-loop Beta Function of QCD

B. Alles, C. Christou, A. Feo +2

Using the background field technique, we calculate the 3-loop beta function of lattice gauge theories. In the pure gluonic case, we present our results, comparing to those…

hep-lat1995★ 42 cited

Improved lattice operators: the case of the topological charge density

C. Christou, A. Di Giacomo, H. Panagopoulos +1

We analyze the properties of a class of improved lattice topological charge density operators, constructed by a smearing-like procedure. By optimizing the choice of the parameters…

hep-lat1995

Improving the topological charge density operator on the lattice

C. Christou, A. Di Giacomo, H. Panagopoulos +1

We analyze the properties of a class of improved lattice topological charge density operators, constructed by a smearing-like procedure. By optimizing the choice of the parameters…

hep-lat1995★ 20 cited

Topological charge density renormalization in the presence of dynamical fermions

B. Alles, A. Di Giacomo, H. Panagopoulos +1

We study the renormalization group behaviour of the topological charge density in full QCD on the lattice. We propose a way of extracting the necessary renormalization functions fr…