Zobrazeno 1 - 10
of 1 187
pro vyhledávání: '"Finkenrath"'
Autor:
Alexandrou, Constantia, Bacchio, Simone, Constantinou, Martha, Delmar, Joseph, Finkenrath, Jacob, Kostrzewa, Bartosz, Petschlies, Marcus, Chacon, Luis Alberto Rodriguez, Spanoudes, Gregoris, Steffens, Fernanda, Urbach, Carsten, wenger, Urs
We present the full decomposition of the momentum fraction carried by quarks and gluons in the pion and the kaon. We employ three gauge ensembles generated with $N_f=2+1+1$ Wilson twisted-mass clover-improved fermions at the physical quark masses. Fo
Externí odkaz:
http://arxiv.org/abs/2405.08529
Autor:
Alexandrou, Constantia, Finkenrath, Jacob, Leontiou, Theodoros, Meinel, Stefan, Pflaumer, Martin, Wagner, Marc
Publikováno v:
Phys. Rev. D 110, 054510 (2024)
We study the $\bar b \bar b u d$ tetraquark with quantum numbers $I(J^P) = 0(1^+)$ as well as the $\bar b \bar b u s$ tetraquark with quantum numbers $J^P = 1^+$ using lattice QCD. We improve on existing work by including both local and scattering in
Externí odkaz:
http://arxiv.org/abs/2404.03588
We propose a new framework of Hessian-free force-gradient integrators that do not require the analytical expression of the force-gradient term based on the Hessian of the potential. Due to that the new class of decomposition algorithms for separable
Externí odkaz:
http://arxiv.org/abs/2403.10370
Autor:
Alexandrou, C., Bacchio, S., De Santis, A., Evangelista, A., Finkenrath, J., Frezzotti, R., Gagliardi, G., Garofalo, M., Kostrzewa, B., Lubicz, V., Romiti, S., Sanfilippo, F., Simula, S., Tantalo, N., Urbach, C., Wenger, U.
We present a lattice determination of the inclusive decay rate of the process $\tau\mapsto X_{us} \nu_\tau$ in which the $\tau$ lepton decays into a generic hadronic state $X_{us}$ with $\bar u s$ flavour quantum numbers. Our results have been obtain
Externí odkaz:
http://arxiv.org/abs/2403.05404
Autor:
Finkenrath, Jacob
State-of-the-art simulations of discrete gauge theories are based on Markov chains with local changes in the field space, which however at very fine lattice spacings are notoriously difficult due to separated topological sectors of the gauge field. H
Externí odkaz:
http://arxiv.org/abs/2402.12176
Autor:
Finkenrath, Jacob
This review gives an overview on the research of algorithms for dynamical fermions used in large scale lattice QCD simulations. First a short overview on the state-of-the-art of ensemble generation at the physical point is given. Followed by an overv
Externí odkaz:
http://arxiv.org/abs/2402.11704
Autor:
Urrea-Niño, Juan Andrés, Finkenrath, Jacob, Höllwieser, Roman, Knechtli, Francesco, Korzec, Tomasz, Peardon, Michael
We use the method of optimal distillation profiles to compute the low-lying charmonium spectrum in an $N_f = 3+1$ ensemble at the $SU(3)$ light flavor symmetric point ($m_{\pi} \approx 420$ MeV), physical charm quark mass and lattice spacing $a\appro
Externí odkaz:
http://arxiv.org/abs/2312.16740
Autor:
Alexandrou, Constantia, Finkenrath, Jacob, Leontiou, Theodoros, Meinel, Stefan, Pflaumer, Martin, Wagner, Marc
Publikováno v:
Phys. Rev. Lett. 132, 151902 (2024)
We present the first determination of the energy dependence of the $B$-$\bar{D}$ and $B^*$-$\bar{D}$ isospin-0, $S$-wave scattering amplitudes both below and above the thresholds using lattice QCD, which allows us to investigate rigorously whether mi
Externí odkaz:
http://arxiv.org/abs/2312.02925
Autor:
Hadjigeorgiou, Andreas, Stylianou, Christodoulos, Weiland, Michele, Verschuur, Dirk Jacob, Finkenrath, Jacob
The expanding hardware diversity in high performance computing adds enormous complexity to scientific software development. Developers who aim to write maintainable software have two options: 1) To use a so-called data locality abstraction that handl
Externí odkaz:
http://arxiv.org/abs/2311.05038
Autor:
Alexandrou, Constantia, Bacchio, Simone, Constantinou, Martha, Finkenrath, Jacob, Frezzotti, Roberto, Kostrzewa, Bartosz, Koutsou, Giannis, Spanoudes, Gregoris, Urbach, Carsten
We compute the nucleon axial and pseudoscalar form factors using three $N_f=$2+1+1 twisted mass fermion ensembles with all quark masses tuned to approximately their physical values. The values of the lattice spacings of these three physical point ens
Externí odkaz:
http://arxiv.org/abs/2309.05774