Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Höllwieser, Roman"'
Maximal Center Gauge (MCG) aims to detect center vortices by maximizing a gauge functional and then projecting onto the center elements of the respective group. The requirement for unrestricted maximization of the gauge functional has proven to be un
Externí odkaz:
http://arxiv.org/abs/2404.13304
Autor:
Brida, Mattia Dalla, Höllwieser, Roman, Knechtli, Francesco, Korzec, Tomasz, Ramos, Alberto, Sint, Stefan, Sommer, Rainer
Close to the continuum limit, lattice QCD with mass-degenerate Wilson quarks can be described by Symanzik's effective continuum action, which contains the dimension 5 operator, $m\,{\rm tr}(F_{\mu\nu}F_{\mu\nu})$. Its effect can be eliminated by an O
Externí odkaz:
http://arxiv.org/abs/2401.05791
Autor:
Neuendorf, Jan, Egbring, Giulia, Heitger, Jochen, Höllwieser, Roman, Knechtli, Francesco, Korzec, Tomasz, Urrea-Niño, Juan Andrés
It has been demonstrated that distillation profiles can be employed to build optimized quarkonium interpolators for spectroscopy calculations in lattice QCD. We test their usefulness for heavy-light systems on (3+1)-flavor ensembles with mass-degener
Externí odkaz:
http://arxiv.org/abs/2401.05828
We investigate a reliability of the hypothesis of exact conservation of the charged weak hadronic vector current in the neutron $\beta^-$-decay with polarized neutron and unpolarized proton and electron. We calculate the contributions of the phenomen
Externí odkaz:
http://arxiv.org/abs/2401.03066
Autor:
Brida, Mattia Dalla, Höllwieser, Roman, Knechtli, Francesco, Korzec, Tomasz, Sint, Stefan, Sommer, Rainer
Publikováno v:
J. High Energ. Phys. 2024, 188 (2024)
With Wilson quarks, on-shell O($a$) improvement of the lattice QCD action is achieved by including the Sheikholeslami-Wohlert term and two further operators of mass dimension 5, which amount to a mass-dependent rescaling of the bare parameters. We he
Externí odkaz:
http://arxiv.org/abs/2401.00216
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
We determine the scales $r_0$, $r_1$, the ratio $r_0/r_1$ for $N_f$ = 2 + 1 flavor QCD ensembles generated by CLS. These scales are determined from an improved definition of the static force, which we measure using Wilson loops and furthermore use to
Externí odkaz:
http://arxiv.org/abs/2312.14726
Publikováno v:
Universe 2023, 9, 389
Maximal center gauge (MCG) aims to detect some of the most important vacuum configurations, suggesting thick magnetic flux tubes quantised to non-trivial center elements of the gauge group being responsible for confinement. Due to the NP-hardness of
Externí odkaz:
http://arxiv.org/abs/2301.05903
Autor:
Höllwieser, Roman, Knechtli, Francesco, Korzec, Tomasz, Peardon, Michael, Urrea-Niño, Juan Andrés
We investigate static quark anti-quark operators based on trial states formed from eigenvectors of the covariant three-dimensional lattice Laplace operator. We test the method by computing the static quark-anti-quark potential and comparing results t
Externí odkaz:
http://arxiv.org/abs/2212.08485
Autor:
Brida, Mattia Dalla, Höllwieser, Roman, Knechtli, Francesco, Korzec, Tomasz, Nada, Alessandro, Ramos, Alberto, Sint, Stefan, Sommer, Rainer
We present the details and first results of a new strategy for the determination of $\alpha_s(m_Z)$. By simultaneously decoupling 3 fictitious heavy quarks we establish a relation between the $\Lambda$-parameters of three-flavor QCD and pure gauge th
Externí odkaz:
http://arxiv.org/abs/2209.14204