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Articles by Dalla Brida
CERN Document Server
Home > A non-perturbative determination of $b_{\rm g}$ Report number arXiv:2401.05791 Title A non-perturbative determination of $b_{\rm g}$ Author(s) Dalla Brida, Mattia (CERN) ; Knechtli, Francesco (Wuppertal U.) ; Korzec, Tomasz (Wuppertal U.) ; Ramos, Alberto (Valencia U., IFIC) ; Sint, Stefan (TCD, Dublin) ; Sommer, Rainer (Julich, NIC ; DESY ; Humboldt U., Berlin) ; Höllwieser, Roman (Wuppertal U.) Publication 2024-05-02 Imprint 2024-01-11 Number of pages 8 Note 8 pages, 1 figure,...
CERN Document Server
Home > Progresses on high-temperature QCD: Equation of State and energy-momentum tensor Report number arXiv:2312.11009 Title Progresses on high-temperature QCD: Equation of State and energy-momentum tensor Author(s) Bresciani, Matteo (Milan Bicocca U. ; INFN, Milan) ; Dalla Brida, Mattia (CERN) ; Giusti, Leonardo (Milan Bicocca U.) ; Pepe, Michele (INFN, Milan) Imprint 2023-12-18. - 8 p.
Nonperturbative running of the tensor operator for $N_{\textrm{f}}=3$ QCD from the chirally rotated Schrödinger Functional
Home > Nonperturbative running of the tensor operator for $N_{\textrm{f}}=3$ QCD from the chirally rotated Schrödinger Functional Report number arXiv:2311.15046 Title Nonperturbative running of the tensor operator for $N_{\textrm{f}}=3$ QCD from the chirally rotated Schrödinger Functional If you experience any problem watching the video, click the download button below Author(s) Campos Plasencia, Isabel (Cantabria Inst.
CERN Document Server
Home > Heavy Wilson Quarks and O($a$) Improvement: Nonperturbative Results for $b_{\rm g}$ Report number arXiv:2401.00216 Title Heavy Wilson Quarks and O($a$) Improvement: Nonperturbative Results for $b_{\rm g}$ If you experience any problem watching the video, click the download button below Author(s) Dalla Brida, Mattia (CERN) ; Höllwieser, Roman (Wuppertal U.) ; Knechtli, Francesco (Wuppertal U.) ; Korzec, Tomasz (Wuppertal U.) ; Sint, Stefan (Hamilton Math.
Non-perturbative renormalization of the flavour singlet local vector current with O($a$)-improved Wilson fermions
Home > Non-perturbative renormalization of the flavour singlet local vector current with O($a$)-improved Wilson fermions Title Non-perturbative renormalization of the flavour singlet local vector current with O($a$)-improved Wilson fermions Author(s) Bresciani, Matteo (Milan Bicocca U. ; INFN, Milan Bicocca) ; Dalla Brida, Mattia (CERN) ; Giusti, Leonardo (Milan Bicocca U. ; INFN, Milan Bicocca) ; Pepe, Michele (INFN, Milan Bicocca) ; Rapuano, Federico (Milan Bicocca U.
RG-running of the tensor currents for $N_f$ =3 QCD in a $\chi SF$ setup
Home > RG-running of the tensor currents for $N_f$ =3 QCD in a $\chi SF$ setup Report number CERN-TH-2022-185 ; arXiv:2211.08829 Title RG-running of the tensor currents for $N_f$ =3 QCD in a $\chi SF$ setup If you experience any problem watching the video, click the download button below Download Embed Author(s) Campos Plasencia, Isabel ; Dalla Brida, Mattia ; de Divitiis, Giulia Maria ; Lytle, Andrew ; Papinutto, Mauro ; Pirelli, Ludovica ; Vladikas, Anastassios Document contact Contact:...
Determination of $\alpha_s(m_Z)$ by the non-perturbative decoupling method
Home > Determination of $\alpha_s(m_Z)$ by the non-perturbative decoupling method Report number IFIC/22-25 ; WUB/22-00 ; DESY-22-051 ; CERN-TH-2022-015 ; HU-EP-22/04 ; arXiv:2209.14204 Title Determination of $\alpha_s(m_Z)$ by the non-perturbative decoupling method If you experience any problem watching the video, click the download button below Download Embed Author(s) Dalla Brida, Mattia (CERN) ; Höllwieser, Roman (Wuppertal U.) ; Knechtli, Francesco (Wuppertal U.) ; Korzec, Tomasz...
CERN Document Server
Report number arXiv:1907.01435 Title $\alpha_s$(2019): Precision measurements of the QCD coupling Author(s) d'Enterria, David (CERN) ; Kluth, Stefan (Munich, Max Planck Inst.) ; Alekhin, S. (Hamburg U.) ; Baikov, P.A. (Lomonosov Moscow State U.) ; Banfi, A. (Sussex U.) ; Barreiro, F. (Madrid, Autonoma U.) ; Bazavov, A. (Michigan State U., East Lansing (main)) ; Bethke, S. ; Blümlein, J. (DESY, Zeuthen) ; Boito, D. (Sao Paulo U.) ; Brambilla, N. (Munich, Tech. U.) ; Britzger, D.
CERN Document Server
Title $\alpha_s$(2019) discussions summary Author(s) Alekhin, Sergey (Hamburg U., Inst. Theor. Phys. II ; Serpukhov, IHEP) ; Barreiro, Fernando (U. Autonoma, Madrid (main)) ; Bethke, Siegfried (Munich, Max Planck Inst.) ; Brambilla, Nora (Munich, Tech.
CERN Document Server
We discuss and compare the efficiency of various methods, combinations of point-to-all propagators, stochastic timeslice-to-all propagators, the one-end trick and sequential propagators, to compute two-point correlation functions of two-quark and four-quark interpolating operators of different structure including quark-antiquark type, mesonic molecule type, diquark-antidiquark type and two-meson type.
arXiv : QCD in a moving frame: an exploratory study
The framework of shifted boundary conditions has proven to be a very powerful tool for the non-perturbative investigation of thermal quantum field theories. For instance, it has been successfully considered for the determination of the equation of state of SU(3) Yang-Mills theory with high accuracy. The set-up can be generalized to QCD and it is expected to lead to a similar breakthrough.
The strong coupling from a nonperturbative determination of the $\Lambda$ parameter in three-flavor QCD : arXiv
We present a lattice determination of the $\Lambda$ parameter in three-flavor QCD and the strong coupling at the Z pole mass. Computing the nonperturbative running of the coupling in the range from $0.2\,$GeV to $70\,$GeV, and using experimental input values for the masses and decay constants of the pion and the kaon, we obtain $\Lambda_{\overline{\rm MS}}^{(3)}=341(12)\,$MeV.
An Investigation of New Methods for Numerical Stochastic Perturbation Theory in $\varphi^4$ Theory
Numerical stochastic perturbation theory is a powerful tool for estimating high-order perturbative expansions in lattice field theory. The standard algorithms based on the Langevin equation, however, suffer from several limitations which in practice restrict the potential of this technique. In this work we investigate some alternative methods which could in principle improve on the standard approach.
The gradient flow coupling from numerical stochastic perturbation theory
Perturbative calculations of gradient flow observables are technically challenging. Current results are limited to a few quantities and, in general, to low perturbative orders. Numerical stochastic perturbation theory is a potentially powerful tool that may be applied in this context. Precise results using these techniques, however, require control over both statistical and systematic uncertainties.
SMD-based numerical stochastic perturbation theory
The viability of a variant of numerical stochastic perturbation theory, where the Langevin equation is replaced by the SMD algorithm, is examined. In particular, the convergence of the process to a unique stationary state is rigorously established and the use of higher-order symplectic integration schemes is shown to be highly profitable in this context.
The $\Lambda$-parameter in 3-flavour QCD and $\alpha_s(m_Z)$ by the ALPHA collaboration
We present results by the ALPHA collaboration for the $\Lambda$-parameter in 3-flavour QCD and the strong coupling constant at the electroweak scale, $\alpha_s(m_Z)$, in terms of hadronic quantities computed on the CLS gauge configurations. The first part of this proceedings contribution contains a review of published material \cite{Brida:2016flw,DallaBrida:2016kgh} and yields the $\Lambda$-parameter in units of a low energy scale, $1/L_{\rm had}$.
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