Lattice perturbation theory

S Capitani - Physics Reports, 2003 - Elsevier
The consideration of quantum fields defined on a spacetime lattice provides computational
techniques which are invaluable for studying gauge theories nonperturbatively from first …

A complete non-perturbative renormalization prescription for quasi-PDFs

C Alexandrou, K Cichy, M Constantinou… - Nuclear Physics B, 2017 - Elsevier
In this work we present, for the first time, the non-perturbative renormalization for the
unpolarized, helicity and transversity quasi-PDFs, in an RI′ scheme. The proposed …

Perturbative renormalization of quasi-parton distribution functions

M Constantinou, H Panagopoulos - Physical Review D, 2017 - APS
In this paper we present results for the renormalization of gauge invariant nonlocal fermion
operators which contain a Wilson line, to one-loop level in lattice perturbation theory. Our …

[图书][B] Lattice methods for quantum chromodynamics

TA Degrand, C DeTar - 2006 - books.google.com
Numerical simulation of lattice-regulated QCD has become an important source of
information about strong interactions. In the last few years there has been an explosion of …

Partial flavor symmetry restoration for chiral staggered fermions

W Lee, SR Sharpe - Physical Review D, 1999 - APS
We study the leading discretization errors for staggered fermions by first constructing the
continuum effective Lagrangian, including terms of O (a 2), and then constructing the …

-wave nucleon-pion scattering amplitude in the channel from lattice QCD

G Silvi, S Paul, C Alexandrou, S Krieg, L Leskovec… - Physical Review D, 2021 - APS
We determine the Δ (1232) resonance parameters using lattice QCD and the Lüscher
method. The resonance occurs in elastic pion-nucleon scattering with JP= 3/2+ in the …

Matrix elements of four-fermion operators with quenched Wilson fermions

R Gupta, T Bhattacharya, SR Sharpe - Physical Review D, 1997 - APS
We present results for the matrix elements of a variety of four-fermion operators calculated
using quenched Wilson fermions. Our simulations are done on 170 lattices of size 32 3× 64 …

Magnetic susceptibility of QCD at zero and at finite temperature from the lattice

GS Bali, F Bruckmann, M Constantinou, M Costa… - Physical Review D …, 2012 - APS
The response of the QCD vacuum to a constant external (electro) magnetic field is studied
through<? format?> the tensor polarization of the chiral condensate and the magnetic …

One-loop renormalization of staple-shaped operators in continuum and lattice regularizations

M Constantinou, H Panagopoulos, G Spanoudes - Physical Review D, 2019 - APS
In this paper we present one-loop results for the renormalization of nonlocal quark bilinear
operators, containing a staple-shaped Wilson line, in both continuum and lattice …

Supersymmetric QCD on the lattice: Fine-tuning and counterterms for the quartic couplings

M Costa, H Herodotou, H Panagopoulos - arXiv preprint arXiv:2409.09089, 2024 - arxiv.org
In this work we calculate the renormalization of counterterms which arise in the lattice action
of $ N= 1$ Supersymmetric QCD (SQCD). In particular, the fine-tunings for quartic couplings …