68 citations · 226 across the 15 of their papers we have counts for
14 papers · 1 filter
Check of a new non-perturbative mechanism for elementary fermion mass generation
Stefano Capitani, Giulia Maria De Divitiis, Petros Dimopoulos +8
We consider a field theoretical model where a SU(2) fermion doublet, subjected to non-Abelian gauge interactions, is also coupled to a complex scalar field doublet via a Yukawa and…
Accelerating Twisted Mass LQCD with QPhiX
Mario Schröck, Silvano Simula, Alexei Strelchenko
We present the implementation of twisted mass fermion operators for the QPhiX library. We analyze the performance on the Intel Xeon Phi (Knights Corner) coprocessor as well as on I…
Lattice QCD Green's functions in maximally Abelian gauge: infrared Abelian dominance and the quark sector
Mario Schröck, Hannes Vogt
On lattice gauge field configurations with 2+1 dynamical quark flavors, we investigate the momentum space quark and gluon propagators in the combined maximally Abelian plus $U(1)_3…
cuLGT: Lattice Gauge Fixing on GPUs
Hannes Vogt, Mario Schröck
We adopt CUDA-capable Graphic Processing Units (GPUs) for Landau, Coulomb and maximally Abelian gauge fixing in 3+1 dimensional SU(3) and SU(2) lattice gauge field theories. A comb…
Enumerating Copies in the First Gribov Region on the Lattice in up to four Dimensions
Dhagash Mehta, Mario Schröck
The covariant gauges are known to suffer from the Gribov problem: even after fixing a gauge non-perturbatively, there may still exist residual copies which are physically equivalen…
Confinement in Coulomb gauge
G. Burgio, M. Quandt, H. Reinhardt +2
We review our lattice results concerning the Gribov-Zwanziger confinement mechanism in Coulomb gauge. In particular, we verify the validity of Gribov's IR divergence condition for…
Effects of Low vs. High Fermionic Modes on Hadron Mass Generation
M. Denissenya, L. Ya. Glozman, C. B. Lang +1
A nonvanishing spectral density of the low-lying eigenmodes of the Dirac operator naturally is a signal for dynamical chiral symmetry breaking (DSB) via the Banks-Casher relatio…
More effects of Dirac low-mode removal
M. Schröck, M. Denissenya, L. Ya. Glozman +1
In previous studies we have shown that hadrons, except for a pion, survive the removal of the lowest lying Dirac eigenmodes from the valence quark propagators. The low-modes are ti…
Gauge fixing in lattice QCD with multi-GPUs
Mario Schröck, Hannes Vogt
Here we present the cuLGT code for gauge fixing in lattice gauge field theories with graphic processing units (GPUs). Implementations for SU(3) Coulomb, Landau and maximally Abelia…
Coulomb, Landau and Maximally Abelian Gauge Fixing in Lattice QCD with Multi-GPUs
Mario Schröck, Hannes Vogt
A lattice gauge theory framework for simulations on graphic processing units (GPUs) using NVIDIA's CUDA is presented. The code comprises template classes that take care of an optim…
Symmetries of hadrons after unbreaking the chiral symmetry
L. Ya. Glozman, C. B. Lang, M. Schröck
We study hadron correlators upon artificial restoration of the spontaneously broken chiral symmetry. In a dynamical lattice simulation we remove the lowest lying eigenmodes of the…
Running mass, effective energy and confinement: the lattice quark propagator in Coulomb gauge
G. Burgio, M. Schröck, H. Reinhardt +1
We calculate the lattice quark propagator in Coulomb gauge both from dynamical and quenched configurations. We show that in the continuum limit both the static and full quark propa…
Effects of the low lying Dirac modes on the spectrum of ground state mesons
C. B. Lang, Mario Schröck
The lowest eigenmodes of the Dirac operator are related to the dynamical breaking of the chiral symmetry in Quantum Chromodynamics (QCD). In our work we construct quark propagators…
Unbreaking chiral symmetry
C. B. Lang, Mario Schröck
In Quantum Chromodynamics (QCD) the eigenmodes of the Dirac operator with small absolute eigenvalues have a close relationship to the dynamical breaking of the chiral symmetry. In…