383 citations · 2k across the 33 of their papers we have counts for
35 papers
Gauge-invariant Higgs mechanism via gradient-flow regularization
Gunnar S. Bali
We provide a manifestly gauge-invariant description of the Higgs mechanism in the Standard Model, casting it not as the breaking of a local symmetry, but as a smooth, analytic cros…
Future Requirements of Lattice Field Theory Calculations on European High-Performance Computing Facilities
Gert Aarts, Gunnar Bali, Jacob Finkenrath +4
Lattice field theory provides a first-principles framework for studying properties of strongly interacting quantum field theories in elementary particle physics. Researchers in lat…
Solving the PCAC puzzle for nucleon axial and pseudoscalar form factors
G. S. Bali, S. Collins, M. Gruber +3
It has been observed in multiple lattice determinations of isovector axial and pseudoscalar nucleon form factors, that, despite the fact that the partial conservation of the axialv…
Weak decay of magnetized pions
Gunnar S. Bali, Bastian B. Brandt, Gergely Endrodi +1
The leptonic decay of charged pions is investigated in the presence of background magnetic fields. In this situation Lorentz symmetry is broken and new fundamental decay constants…
Charmonia in moving frames
S. Prelovsek, G. Bali, S. Collins +4
Lattice simulation of charmonium resonances with non-zero momentum provides additional information on the two-meson scattering matrices. However, the reduced rotational symmetry in…
Paramagnetic squeezing of QCD matter
G. S. Bali, F. Bruckmann, G. Endrodi +1
We determine the magnetization of Quantum Chromodynamics (QCD) for several temperatures around and above the transition between the hadronic and the quark-gluon phases of strongly…
Magnetization and pressures at nonzero magnetic fields in QCD
G. S. Bali, F. Bruckmann, G. Endrodi +1
Two approaches are pursued to determine the magnetization of the QCD vacuum at zero and nonzero temperatures using lattice simulations. The first method builds on pressure anisotro…
Magnetic field-induced gluonic (inverse) catalysis and pressure (an)isotropy in QCD
G. S. Bali, F. Bruckmann, G. Endrodi +2
We study the influence of strong external magnetic fields on gluonic and fermionic observables in the QCD vacuum at zero and nonzero temperatures, via lattice simulations with N_f=…
Magnetic susceptibility of QCD at zero and at finite temperature from the lattice
G. S. Bali, F. Bruckmann, M. Constantinou +5
The response of the QCD vacuum to a constant external (electro)magnetic field is studied through the tensor polarization of the chiral condensate and the magnetic susceptibility at…
Towards a determination of Csw using Numerical Stochastic Perturbation Theory (NSPT)
C. Torrero, G. S. Bali
We outline a strategy to compute the second-loop contribution to the Csw coefficient of the Sheikoleslami-Wohlert-Wilson fermion action by means of NSPT. We also present preliminar…
Observation of String Breaking in QCD
SESAM Collaboration, Gunnar S. Bali, Hartmut Neff +3
We numerically investigate the transition of the static quark-antiquark string into a static-light meson-antimeson system. Improving noise reduction techniques, we are able to reso…
Two Quark Potentials
G. Bali, A. M. Green
In this Chapter QCD interactions between a quark and an anti-quark are discussed. In the heavy quark limit these potentials can be related to quarkonia and corrections can be…
Heavy Quarkonium Physics
N. Brambilla, M. Krämer, R. Mussa +82
This report is the result of the collaboration and research effort of the Quarkonium Working Group over the last three years. It provides a comprehensive overview of the state of t…
String breaking with dynamical Wilson fermions
G. S. Bali, Th. Duessel, Th. Lippert +3
We present results of our ongoing determination of string breaking in full QCD with N_f=2 Wilson fermions. Our investigation of the fission of the static quark-antiquark string int…
Where do perturbative and non-perturbative QCD meet?
G. S. Bali, P. Boyle, C. T. H. Davies
We computed the static potential and Wilson loops to in perturbation theory for different lattice quark and gluon actions. In general, we find short distance lattice data…
Flavour singlet pseudoscalar masses in N_f = 2 QCD
T. Struckmann, K. Schilling, G. Bali +8
We perform a lattice mass analysis in the flavour singlet pseudoscalar channel on the SESAM and TXL full QCD vacuum configurations, with 2 active flavours of dynamical Wilson fermi…
A High Precision Study of the QQ(bar) Potential from Wilson Loops in the Regime of String Breaking
B. Bolder, T. Struckmann, G. S. Bali +5
For lattice QCD with two sea quark flavours we compute the static quark antiquark potential V(R) in the regime where string breaking is expected. In order to increase statistics, w…
A Ginzburg-Landau Analysis of the Colour Electric Flux Tube
G. S. Bali, Ch. Schlichter, K. Schilling
In a simulation of SU(2) gauge theory we investigate, after maximal Abelian projection, the dual Maxwell equations for colour field and monopole current distributions around a stat…
Decorrelating Topology with HMC
Th. Lippert, B. Alles, G. Bali +9
The investigation of the decorrelation efficiency of the HMC algorithm with respect to vacuum topology is a prerequisite for trustworthy full QCD simulations, in particular for the…
Scanning the Topological Sectors of the QCD Vacuum with Hybrid Monte Carlo
B. Alles, G. Bali, M. D'Elia +10
We address a long standing issue and determine the decorrelation efficiency of the Hybrid Monte Carlo algorithm (HMC), for full QCD with Wilson fermions, with respect to vacuum top…
Critical Dynamics of the Hybrid Monte Carlo Algorithm
SESAM, TXL collaboration, : +13
We investigate the critical dynamics of the Hybrid Monte Carlo algorithm approaching the chiral limit of standard Wilson fermions. Our observations are based on time series of leng…
Glueballs and string breaking from full QCD
TchiL collaboration, G. S. Bali, N. Eicker +14
We present results on the static potential, and torelon and glueball masses from simulations of QCD with two flavours of dynamical Wilson fermions on and $24^3\time…
SESAM and TXL Results for Wilson Action--A Status Report
Th. Lippert, G. Bali, N. Eicker +11
Results from two studies of full QCD with two flavours of dynamical Wilson fermions are presented. At beta=5.6, the region 0.83 > m_pi/m_rho > 0.56 at m_pia > 0.23 L^{-1} is explor…
Towards the glueball spectrum of full QCD
G. S. Bali, U. Glassner, S. Gusken +7
We present first results on masses of the scalar and tensor glueballs as well as of the torelon from simulations of QCD with two light flavours of Wilson fermions. The gauge config…