723 citations · 4.7k across the 84 of their papers we have counts for
66 papers · 1 filter
Critical coupling and in three-dimensional theory
Stephan Durr, Tolga S. H. Kiel
We consider the theory with in three Euclidean dimensions. For a variety of self-couplings , the critical (bare) parameter $\hatμ_{0\mathrm{c}}^2(\…
Diagonal Kenney-Laub Rational Approximation to the Overlap Operator using Wilson and Brillouin Kernel
Stephan Durr, Stylianos Gregoriou, Giannis Koutsou
We propose a formulation of the overlap Dirac operator in lattice QCD that employs diagonal Kenney-Laub (KL) iterates to approximate the matrix sign function. KL iterates require n…
One-loop for Wilson and Brillouin fermions with stout smearing or Wilson flow
Maximilian Ammer, Stephan Durr
We present results for the one-loop value of the improvement coefficient for Wilson and Brillouin fermions subject to stout smearing or Wilson flow, in combination…
Diagonal Kenney-Laub Rational Approximation to the Overlap Dirac Operator
Stephan Durr, Stylianos Gregoriou, Giannis Koutsou
We propose a practical formulation of the overlap Dirac operator in lattice QCD that employs the diagonal Kenney-Laub rational iterates - expressed via their partial fraction decom…
Critical coupling in theory
Stephan Durr, Tolga S. H. Kiel
We consider theory with in two Euclidean dimensions. We determine for a variety of self-couplings the (negative) critical bare mass $\hatμ_{0\math…
Topological susceptibility and excess kurtosis in SU(3) Yang-Mills theory
Stephan Durr, Gianluca Fuwa
We present a high-precision study of the topological susceptibility in pure gauge theory in four space-time dimensions. The result is based on ensembles at seven lattice sp…
Numerical study of the dimensionally reduced 3D Ising model
Tolga Kiel, Stephan Durr
We study the 3D Ising model in the infinite volume limit by means of numerical simulations. We determine as well as the critical exponents and ,…
Taste-splittings of staggered, Karsten-Wilczek and Borici-Creutz fermions under gradient flow in 2D
Stefano Capitani, Stephan Durr
Karsten-Wilczek and Borici-Creutz fermions show a near-degeneracy of the species involved, similar to the species of staggered fermions. Hence in dimensions all…
Topology in 2D non-Abelian Lattice Gauge Theories
Stephan Durr, Philip Rouenhoff
In two dimensions, gauge theories exhibit a non-trivial topological structure, while theories are topologically trivial. Hence, for the phase space…
at One-Loop Order for Brillouin Fermions
Maximilian Ammer, Stephan Durr
Wilson-like Dirac operators can be written in the form . For Wilson fermions the standard two-point derivative and 9-poin…
Fast and flexible implementations of Wilson, Brillouin and Susskind fermions in lattice QCD
Stephan Durr
A modern Fortran implementation of three Dirac operators (Wilson, Brillouin, Susskind) in lattice QCD is presented, based on OpenMP shared-memory parallelization and SIMD pragmas.…
Stout-smearing, gradient flow and at one loop order
Maximilian Ammer, Stephan Durr
The one-loop determination of the coefficient of the Wilson quark action has been useful to push the leading cut-off effects for on-shell quantities to $\mathcal{O}(α…
Minimally doubled fermions and topology in 2D
Stephan Durr, Johannes H. Weber
We use the two-dimensional Schwinger model to investigate how lattice fermions perceive the global topological charge of a given gauge background . After a warm…
Details of a staggered fermion data analysis
Maximilian Ammer, Stephan Durr
We present technical details of an analysis of pseudo-scalar data from a QCD simulation with staggered fermions. The data were obtained close to the physical point with an inverse…
FLAG Review 2019
S. Aoki, Y. Aoki, D. Becirevic +32
We review lattice results related to pion, kaon, -meson, -meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communi…
Three Dirac operators on two architectures with one piece of code and no hassle
Stephan Durr
A simple minded approach to implement three discretizations of the Dirac operator (staggered, Wilson, Brillouin) on two architectures (KNL and core i7) is presented. The idea is to…
Optimization of the Brillouin operator on the KNL architecture
Stephan Durr
Experiences with optimizing the matrix-times-vector application of the Brillouin operator on the Intel KNL processor are reported. Without adjustments to the memory layout, perform…
Up and down quark masses and corrections to Dashen's theorem from lattice QCD and quenched QED
L. Varnhorst, S. Durr, Z. Fodor +6
We present a determination of the corrections to Dashen's theorem and of the individual up and down quark masses from a lattice calculation based on quenched QED and QCD…
Leptonic decay-constant ratio from lattice QCD using 2+1 clover-improved fermion flavors with 2-HEX smearing
Stephan Dürr, Zoltán Fodor, Christian Hoelbling +8
We present a calculation of the leptonic decay-constant ratio in 2+1 flavor QCD. Our data set includes five lattice spacings and pion masses reaching down below the physi…
Lattice computation of the nucleon scalar quark contents at the physical point
S. Durr, Z. Fodor, C. Hoelbling +10
We present a QCD calculation of the , and scalar quark contents of nucleons based on lattice ensembles with dynamical sea quarks, lattice spacings d…
QCD thermodynamics with continuum extrapolated Wilson fermions II
Szabolcs Borsanyi, Stephan Durr, Zoltan Fodor +7
We continue our investigation of 2+1 flavor QCD thermodynamics using dynamical Wilson fermions in the fixed scale approach. Two additional pion masses, approximately 440 MeV and 28…
Validity of ChPT -- is M_π=135 MeV small enough ?
Stephan Durr
I discuss the practical convergence of the SU(2) ChPT series in the meson sector, based on 2+1 flavor lattice data by the Wuppertal-Budapest and Budapest-Marseille-Wuppertal collab…
Spectral functions of charmonium with 2+1 flavours of dynamical quarks
Szabolcs Borsanyi, Stephan Dürr, Zoltán Fodor +10
Finite temperature charmonium spectral functions in the pseudoscalar(PS) and vector(V) channels are studied in lattice QCD with 2+1 flavours of dynamical Wilson quarks, on fine iso…
semileptonic decay form factors with disconnected quark loop contributions
Gunnar S. Bali, Sara Collins, Stephan Durr +1
We calculate for the first time the form factors of the semi-leptonic decays of the meson to and using lattice techniques. As a by-product of the calculation w…