102 citations · 559 across the 23 of their papers we have counts for
23 papers · 1 filter
An Update on Distribution Amplitudes of the Nucleon and its Parity Partner
R. W. Schiel, G. S. Bali, V. M. Braun +12
The calculation of baryon wave functions at small inter-quark separations is an ongoing effort within the QCDSF collaboration. In this update on normalization constants and distrib…
Fermionic boundary conditions and the finite temperature transition of QCD
Erek Bilgici, Falk Bruckmann, Julia Danzer +4
Finite temperature lattice QCD is probed by varying the temporal boundary conditions of the fermions. We develop the emerging physical behavior in a study of the quenched case and…
Low and high spin mesons from Clover-Wilson lattices
Tommy Burch, Christian Hagen, Martin Hetzenegger +1
We present results for excited meson spectra from clover-Wilson configurations provided by the CP-PACS Collaboration. In our study we investigate both low and high spin mes…
Dressed Polyakov loops and center symmetry from Dirac spectra
Falk Bruckmann, Erek Bilgici, Christof Gattringer +1
We construct a novel observable for finite temperature QCD that relates confinement and chiral symmetry. It uses phases as boundary conditions for the fermions. We discuss numerica…
Hadron Spectroscopy with Dynamical Chirally Improved Fermions
Christof Gattringer, Christian Hagen, C. B. Lang +3
We simulate two dynamical, mass degenerate light quarks on 16^3x32 lattices with a spatial extent of 2.4 fm using the Chirally Improved Dirac operator. The simulation method, the i…
Dual condensate, dressed Polyakov loops and center symmetry from Dirac spectra
Falk Bruckmann, Erek Bilgici, Christof Gattringer +1
We construct a novel observable for finite temperature QCD that relates confinement and chiral symmetry. It uses phases as boundary conditions for the fermions. We discuss numerica…
Heavy-light hadrons and their excitations
Tommy Burch, Christian Hagen, Christian B. Lang +2
We study the excitations of hadrons containing a single heavy quark. We present meson and baryon mass splittings and ratios of meson decay constants resulting from quenched and dyn…
Excitations of single-beauty hadrons
Tommy Burch, Christian Hagen, Christian B. Lang +2
In this work we study the predominantly orbital and radial excitations of hadrons containing a single heavy quark. We present meson and baryon mass splittings and ratios of meson d…
Dual quark condensate and dressed Polyakov loops
Erek Bilgici, Falk Bruckmann, Christof Gattringer +1
We construct a new order parameter for finite temperature QCD by considering the quark condensate for U(1)-valued temporal boundary conditions for the fermions. Fourier transformat…
Thin and dressed Polyakov loops from spectral sums of lattice differential operators
Erek Bilgici, Christian Hagen, Falk Bruckmann +1
We represent thin and dressed Polyakov loops as spectral sums of eigenvalues of differential operators on the lattice. For that purpose we calculate complete sets of eigenvalues of…
Excited mesons on dynamical clover-Wilson lattices
Tommy Burch, Christian Ehmann, Christian Hagen +2
We present results for masses of excited mesons from dynamical clover-Wilson lattices provided by the CP-PACS collaboration at pion masses down to 500 MeV. Our analysis of the data…
B meson excitations with chirally improved light quarks
T. Burch, D. Chakrabarti, C. Hagen +4
We present our latest results for the excitations of static-light mesons on both quenched and unquenched lattices, where the light quarks are simulated using the chirally improved…
Complete spectra of the Dirac operator and their relation to confinement
Falk Bruckmann, Christof Gattringer, Christian Hagen
We compute complete spectra of the staggered lattice Dirac operator for quenched SU(3) gauge configurations below and above the critical temperature. The confined and the deconfine…
Excited mesons from dynamical Clover Wilson lattices
Tommy Burch, Christian Hagen, Andreas Schäfer
We study mesons on the lattice with a special focus on excited states. For that purpose we construct several quark sources with different spatial smearings, including p-waves. Thes…
Improvement of quark propagator estimation through domain decomposition
Tommy Burch, Christian Hagen
Applying domain decomposition to the lattice Dirac operator and the associated quark propagator, we arrive at expressions which, with the proper insertion of random sources therein…
Domain decomposition improvement of quark propagator estimation
Tommy Burch, Christian Hagen
Applying domain decomposition to the lattice Dirac operator and the associated quark propagator, we arrive at expressions which, with the proper insertion of random sources therein…
Search for the Theta^+(1540) in lattice QCD
Christian Hagen, Dieter Hierl, Andreas Schäfer
We report on a study of the pentaquark Theta^+(1540), using a variety of different interpolating fields. We use Chirally Improved fermions in combination with Jacobi smeared quark…
Excited hadrons on the lattice: Baryons
Tommy Burch, Christof Gattringer, Leonid Ya. Glozman +4
We present results for masses of excited baryons from a quenched calculation with Chirally Improved quarks at pion masses down to 350 MeV. Our analysis of the correlators is based…
Excited hadrons on the lattice: Mesons
Tommy Burch, Christof Gattringer, Leonid Ya. Glozman +3
We present results for masses of excited mesons from quenched calculations using chirally improved quarks at pion masses down to 350 MeV. The key features of our analysis are the u…
Variational method for lattice spectroscopy with ghosts
Tommy Burch, Christof Gattringer, Leonid Ya. Glozman +2
We discuss the variational method used in lattice spectroscopy calculations. In particular we address the role of ghost contributions which appear in quenched or partially quenched…
The Exotic Baryon Theta^+(1540) on the Lattice
Dieter Hierl, Christian Hagen, Andreas Schaefer
We report on a study of the pentaquark Theta^+(1540), using a variety of different interpolating fields. We use Chirally Improved fermions in combination with Jacobi smeared quark…
Excited meson spectroscopy with chirally improved fermions
T. Burch, C. Gattringer, L. Glozman +4
We present excited meson masses from quenched calculations using chirally improved (CI) quarks at pion masses down to 350 MeV. The salient features of our analysis are the use of a…
Baryon spectroscopy with spatially improved quark sources
Tommy Burch, Christof Gattringer, Leonid Ya. Glozman +4
We study baryons on the lattice with a special focus on excited states. For that purpose we construct several interpolators which differ in their Dirac structure. These interpolato…