2 citations · 4 across the 10 of their papers we have counts for
12 papers
Improving hadron creation operators for charmonium, glueballs and baryons
Juan Andrés Urrea-Niño, John Bulava, Nikolai Husung +5
Constructing hadron creation operators which properly sample the finite-volume energy spectrum is a fundamental step in lattice QCD spectroscopy and scattering calculations. Operat…
Charmonium-Glueball spectroscopy with improved hadron creation operators
Juan Andrés Urrea-Niño, Francesco Knechtli, Tomasz Korzec +1
Construction of creation operators which can properly sample the underlying energy eigenstates remains a fundamental first step in lattice QCD spectroscopy calculations, particular…
Imprint of the adjoint meson spectrum in the decay patterns of hidden-bottom tetraquarks
Sipaz Sharma, Juan Andrés Urrea-Niño, Nora Brambilla +2
We aim to clarify the experimentally observed near-degeneracy and decay patterns of the isospin, , hidden-bottom tetraquarks and with quantum numbers…
Using orthogonal projectors in multigrid multilevel Monte Carlo for trace estimation in lattice QCD
Andreas Frommer, Jose Jimenez-Merchan, Francesco Knechtli +2
We introduce a multigrid multilevel Monte Carlo method for stochastic trace estimation in lattice QCD based on orthogonal projections. This formulation extends the previously propo…
Mixing of heavy and light quarks in charmonium and light mesons
Francesco Knechtli, Jacob Finkenrath, Roman Höllwieser +3
We study the system of light mesons, charmonium and glueballs in the flavor singlet scalar channel where they can mix. We use lattice QCD simulations with an almost physical charm…
S-wave flavor-singlet meson mixing in QCD with light and charm quarks
Juan Andrés Urrea-Niño, Jacob Finkenrath, Roman Höllwieser +3
We investigate the mixing between flavor-singlet light meson and charmonium operators in the S-wave channels, i.e. pseudo-scalar and vector channel, at two different pion masses. W…
Numerical stability of force-gradient integrators and their Hessian-free variants in lattice QCD simulations
Kevin Schäfers, Jacob Finkenrath, Michael Günther +1
A comprehensive linear stability analysis of force-gradient integrators and their Hessian-free variants is carried out by investigating the harmonic oscillator as a test equation.…
Flavor mixing in charmonium and light mesons with optimal distillation profiles
Juan Andrés Urrea-Niño, Jacob Finkenrath, Roman Höllwieser +3
We study the light meson - charmonium - glueball mixing using flavor-singlet meson operators built from optimal distillation profiles together with purely gluonic operators in diff…
Update on two-level sampling for glueball observables in quenched QCD
Lorenzo Barca, Jacob Finkenrath, Francesco Knechtli +3
We report our progress in combining a two-level sampling algorithm with distillation techniques for calculations of disconnected diagrams in quenched QCD. The simulations are perfo…
Hessian-free force-gradient integrators and their application to lattice QCD simulations
Kevin Schäfers, Jacob Finkenrath, Michael Günther +1
We present initial results on Hessian-free force-gradient integrators for lattice field theories. Integrators of this framework promise to provide substantial performance enhanceme…
Static-light meson spectroscopy with optimal distillation profiles
Laura Struckmeier, Roman Höllwieser, Francesco Knechtli +3
The spectrum of static-light and static-charm mesons is studied using optimized distillation in two different QCD ensembles with pion masses of $m_π \approx 80…
Hybrid static potentials and gluelumps on ensembles
Roman Höllwieser, Francesco Knechtli, Tomasz Korzec +3
QCD permits the existence of hybrid mesons that are made up of both quarks and gluons, including exotic states, i.e., quantum numbers prohibited for pure quark-antiquark states, wi…