Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Calì, Salvatore"'
This work develops neural-network--based preconditioners to accelerate solution of the Wilson-Dirac normal equation in lattice quantum field theories. The approach is implemented for the two-flavor lattice Schwinger model near the critical point. In
Externí odkaz:
http://arxiv.org/abs/2208.02728
Autor:
Boyda, Denis, Calì, Salvatore, Foreman, Sam, Funcke, Lena, Hackett, Daniel C., Lin, Yin, Aarts, Gert, Alexandru, Andrei, Jin, Xiao-Yong, Lucini, Biagio, Shanahan, Phiala E.
There is great potential to apply machine learning in the area of numerical lattice quantum field theory, but full exploitation of that potential will require new strategies. In this white paper for the Snowmass community planning process, we discuss
Externí odkaz:
http://arxiv.org/abs/2202.05838
Lattice QCD calculations require significant computational effort, with the dominant fraction of resources typically spent in the numerical inversion of the Dirac operator. One of the simplest methods to solve such large and sparse linear systems is
Externí odkaz:
http://arxiv.org/abs/2111.14958
Recent FPGA accelerator cards promise large acceleration factors for some specific computational tasks. In the context of Lattice QCD calculations, we investigate the possible gain of moving the $SU(3)$ gauge field smearing routine to such accelerato
Externí odkaz:
http://arxiv.org/abs/2110.11172
We estimate the effects on the decay constants of charmonium and on heavy meson masses due to the charm quark in the sea. Our goal is to understand whether for these quantities $N_f=2+1$ lattice QCD simulations provide results that can be compared wi
Externí odkaz:
http://arxiv.org/abs/2105.12278
Autor:
Cali, Salvatore, Cichy, Krzysztof, Korcyl, Piotr, Kotko, Piotr, Kutak, Krzysztof, Marquet, Cyrille
In the high energy limit of hadron collisions, the evolution of the gluon density in the longitudinal momentum fraction can be deduced from the Balitsky hierarchy of equations or, equivalently, from the nonlinear Jalilian-Marian-Iancu-McLerran-Weiger
Externí odkaz:
http://arxiv.org/abs/2104.14254
Publikováno v:
Phys. Rev. Lett. 125, 242002 (2020)
In this Letter, we provide a determination of the coupling constant in three-flavor quantum chromodynamics (QCD), $\alpha^{\overline{\mathrm{MS}}}_s(\mu)$, for $\overline{\mathrm{MS}}$ renormalization scales $\mu \in (1,\,2)$ GeV. The computation use
Externí odkaz:
http://arxiv.org/abs/2003.05781
The properties of charmonium states are or will be intensively studied by the B-factories Belle II and BESIII, the LHCb and PANDA experiments and at a future Super-c-tau Factory. Precise lattice calculations provide valuable input and several results
Externí odkaz:
http://arxiv.org/abs/1905.12971
We investigate the influence of dynamical charm quarks on observables that depend explicitly on the charm quark fields, like the pseudo-scalar and vector masses $m_{\eta_c}$ and $m_{J/\psi}$, the hyperfine splitting $(m_{J/\psi}-m_{\eta_c})/m_{\eta_c
Externí odkaz:
http://arxiv.org/abs/1811.05285
Autor:
Bonati, Claudio, Calì, Salvatore, D'Elia, Massimo, Mesiti, Michele, Negro, Francesco, Rucci, Andrea, Sanfilippo, Francesco
Publikováno v:
Phys. Rev. D 98, 054501 (2018)
In this work we investigate the effect of an external magnetic field B on the shape of flux tubes in QCD by means of lattice simulations, performed with N_f=2+1 flavors of stout improved dynamical staggered quarks with physical masses. After having d
Externí odkaz:
http://arxiv.org/abs/1807.01673