108 citations · 277 across the 30 of their papers we have counts for
32 papers · 1 filter
Inclusive P-wave Quarkonium Decay Widths from Lattice QCD and pNRQCD
Nora Brambilla, Viljami Leino, Julian Mayer-Steudte +4
Inclusive hadronic decay widths remain a long-standing challenge for first-principles QCD. We present a framework combining lattice QCD with strongly-coupled potential nonrelativis…
Strong coupling constant from the 1-loop improved static energy
Viljami Leino, Alexei Bazavov, Nora Brambilla +8
The static energy is an excellent observable for extracting the strong coupling on the lattice. For short distances, the static energy can be calculated both on the lattice u…
Lattice study of correlators for quarkonium decay
Saumen Datta, Debasish Banerjee, Nora Brambilla +6
While there has been a lot of progress in developing a formalism for the study of quarkonia in QGP, a nonperturbative study is still difficult. For bottomonia, where the system siz…
Lattice study of correlators of chromoelectric fields for heavy quarkonium dynamics in the quark-gluon plasma
Nora Brambilla, Saumen Datta, Marc Janer +4
We perform a lattice calculation of the correlators of two chromoelectric fields in the adjoint representation connected by adjoint Wilson lines at non-zero temperature. These corr…
Strong coupling in (2+1+1)-flavor QCD
Viljami Leino, Alexei Bazavov, Nora Brambilla +6
The strong coupling can be obtained from the static energy as shown in previous lattices studies. For short distances, the static energy can be calculated both on th…
Adjoint chromoelectric and -magnetic correlators with gradient flow
Viljami Leino
When QCD is described by a nonrelativistic effective field theory, operators consisting of gluonic correlators of two chromoelectric or -magnetic fields will often appear in descri…
Static force from generalized Wilson loops on the lattice using the gradient flow
Nora Brambilla, Viljami Leino, Julian Mayer-Steudte +1
The static QCD force from the lattice can be used to extract , which determines the running of the strong coupling. Usually, this is done with a numeric…
Implications of gradient flow on the static force
Nora Brambilla, Viljami Leino, Julian Mayer-Steudte +1
We use gradient flow to compute the static force based on a Wilson loop with a chromoelectric field insertion. The result can be compared on one hand to the static force from the n…
Heavy quark diffusion coefficient with gradient flow
Viljami Leino, Nora Brambilla, Julian Mayer-Steudte +1
The heavy quark diffusion coefficient is encoded in the spectral functions of the chromo-electric and the chromo-magnetic correlators, of which the latter describes the T/M contrib…
Charm mass effects in the static energy computed in 2+1+1 flavor lattice QCD
Johannes Heinrich Weber, Nora Brambilla, Rafael L. Delgado +5
We report our analysis for the static energy in (2+1+1)-flavor QCD over a wide range of lattice spacings and several quark masses. We obtain results for the static energy out to di…
Static Energy in ()-Flavor Lattice QCD: Scale Setting and Charm Effects
TUMQCD Collaboration, Nora Brambilla, Rafael L. Delgado +6
We present results for the static energy in ()-flavor QCD over a wide range of lattice spacings and several quark masses, including the physical quark mass, with ensembles o…
Heavy quark diffusion coefficient with gradient flow
Nora Brambilla, Viljami Leino, Julian Mayer-Steudte +1
We calculate chromo-electric and chromo-magnetic correlators in quenched QCD at and with the aim to estimate the heavy quark diffusion coefficient at leading or…
Chromoelectric and chromomagnetic correlators at high temperature from gradient flow
Julian Mayer-Steudte, Nora Brambilla, Viljami Leino +1
The heavy quark diffusion coefficient is encoded in the spectral functions of the chromoelectric and the chromomagnetic correlators that are calculable on the lattice. We study the…
The static force from generalized Wilson loops using gradient flow
Viljami Leino, Nora Brambilla, Julian Mayer-Steudte +1
We explore a novel approach to compute the force between a static quark-antiquark pair with the gradient flow algorithm on the lattice. The approach is based on inserting a chromoe…
The static force from generalized Wilson loops
Viljami Leino, Nora Brambilla, Owe Philipsen +3
Recently a method to compute the static force with lattice gauge theory using an insertion of a chromoelectric field into a Wilson loop was proposed. We explore this method using t…
The static energy in 2+1+1-flavor QCD
Sebastian Steinbeißer, Nora Brambilla, Rafael L. Delgado +5
We report on the status of the analysis of the static energy in -flavor QCD. The static energy is obtained by measuring Wilson line correlators in Coulomb gauge using the HI…
Lattice gauge theory computation of the static force
Nora Brambilla, Viljami Leino, Owe Philipsen +3
We explore a novel approach to compute the force between a static quark and a static antiquark with lattice gauge theory directly. The approach is based on expectation values of Wi…
Lattice QCD constraints on the heavy quark diffusion coefficient
Nora Brambilla, Viljami Leino, Peter Petreczky +1
We report progress towards computing the heavy quark momentum diffusion coefficient from the correlator of two chromo-electric fields attached to a Polyakov loop in pure SU(3) gaug…
Heavy quark momentum diffusion coefficient from the lattice
Nora Brambilla, Viljami Leino, Peter Petreczky +1
We report progress towards computing the heavy quark momentum diffusion coefficient from the lattice correlator of two chromoelectric fields attached to a Polyakov loop in pure SU(…
Static force from the lattice
Nora Brambilla, Viljami Leino, Owe Philipsen +3
We present a novel approach to compute the force between a static quark and a static antiquark from lattice gauge theory directly, rather than extracting it from the static energy.…
Safety versus triviality on the lattice
Viljami Leino, Tobias Rindlisbacher, Kari Rummukainen +2
We present the first numerical study of the ultraviolet dynamics of non-asymptotically free gauge-fermion theories at large number of matter fields. As testbed theories we consider…
Infrared Behaviour of SU(2) Gauge Theory with fundamental flavours
Viljami Leino, Kari Rummukainen, Joni M. Suorsa +2
We review our recent results on the infrared behaviour of the SU(2) gauge theory with massless fundamental flavour fermions. We have analyzed the running of the coupling in S…
From chiral symmetry breaking to conformality in SU(2) gauge theory
Alessandro Amato, Viljami Leino, Kari Rummukainen +2
We compute the spectrum of SU(2) gauge theory with two, four or six Dirac fermions in the fundamental representation of the gauge group. We investigate the scaling of the meson mas…
Slope of the beta function at the fixed point of SU(2) gauge theory with six or eight flavors
Viljami Leino, Kari Rummukainen, Kimmo Tuominen
We consider measurement of the leading irrelevant scaling exponent , given by the slope of the beta function, at the fixed point of SU(2) gauge theory with six or eight f…