838 citations · 1.1k across the 22 of their papers we have counts for
24 papers
Entropy, area, and the choice of regulator during gravitational collapse
Jana N. Guenther, Christian Hoelbling, Sophie Mutzel +1
We present a real time formalism to numerically describe the gravitational collapse of a scalar quantum field in the spherically symmetric case. We employ a Pauli-Villars regulator…
Parallel Tempered Metadynamics for full QCD
Timo Eichhorn, Gianluca Fuwa, Christian Hoelbling +1
We present an algorithm that addresses topological freezing in lattice QCD simulations by combining parallel tempering with collective-variable-based enhanced sampling methods, and…
Enhanced Sampling Techniques for Lattice Gauge Theory
Timo Eichhorn, Gianluca Fuwa, Christian Hoelbling +1
In theories with topological sectors, such as lattice QCD and four-dimensional SU(N) gauge theories with periodic boundary conditions, conventional update algorithms suffer from to…
Parallel Tempered Metadynamics
Timo Eichhorn, Gianluca Fuwa, Christian Hoelbling +1
When approaching the continuum limit in lattice QCD or other theories in a setup with topological sectors, conventional update algorithms experience a particularly severe form of c…
Dense and magnetized QCD from imaginary chemical potential
Szabolcs Borsányi, Bastian Brandt, Gergely Endrődi +4
In this work, we computed the equation of state of dense QCD in the presence of background magnetic fields using lattice QCD simulations at imaginary baryon chemical potential. Our…
Lattice QCD calculation of the and meson masses at the physical point using rooted staggered fermions
Willem E. A. Verplanke, Zoltan Fodor, Antoine Gerardin +5
We present a lattice calculation of the and meson masses at the physical point and in the continuum limit, based on flavors of rooted staggered quark…
Hadronic vacuum polarization: comparing lattice QCD and data-driven results in systematically improvable ways
Michel Davier, Zoltan Fodor, Antoine Gerardin +7
The precision with which hadronic vacuum polarization (HVP) is obtained determines how accurately important observables, such as the muon anomalous magnetic moment, a_μ, or the low…
Parallel Tempered Metadynamics: Overcoming potential barriers without surfing or tunneling
Timo Eichhorn, Gianluca Fuwa, Christian Hoelbling +1
At fine lattice spacings, Markov chain Monte Carlo simulations of QCD and other gauge theories with or without fermions are plagued by slow modes that give rise to large autocorrel…
Lattice calculation of the , and transition form factors and the hadronic light-by-light contribution to the muon
Antoine Gérardin, Willem E. A. Verplanke, Gen Wang +5
In this paper we present a first ab-initio calculation of the , and transition form factors performed with physical light-quark masses. We provide a complete…
Isospin Breaking Effects in the 2-Flavor Schwinger Model
Nuha Chreim, Christian Hoelbling, Niklas Pielmeier +1
The automatic fine-tuning of isospin breaking effects by conformal coalescence found by Georgi in the 2-flavor Schwinger model is studied. The analytical results obtained for the b…
Metadynamics Surfing on Topology Barriers in the Schwinger Model
Christian Hoelbling, Timo Eichhorn, Philip Rouenhoff +1
Topological freezing is a well known problem in lattice simulations: with shrinking lattice spacing a transition between topological sectors becomes increasingly improbable, leadin…
Round table on Standard Model Anomalies
Ashutosh Kotwal, Joaquim Matias, Andrea Mauri +2
This contribution to the XVth Quark Confinement and the Hadron Spectrum conference covers a description, both theoretical and experimental, of the present status of a set of very d…
Pseudoscalar transition form factors and the hadronic light-by-light contribution to the muon
Antoine Gérardin, Jana N. Guenther, Lukas Varnhorst +1
We report on our progress toward the computation of the , and transition form factors using staggered quarks on gauge ensembles generated by the B…
Topology changing update algorithms for SU(3) gauge theory
Timo Eichhorn, Christian Hoelbling, Philip Rouenhoff +1
At fine lattice spacings, lattice simulations are plagued by slow (topological) modes that give rise to large autocorrelation times. These, in turn, lead to statistical and systema…
QED and strong isospin corrections in the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon
L. Parato, Sz. Borsanyi, Z. Fodor +11
Recently, the Budapest-Marseille-Wuppertal collaboration achieved sub-percent precision in the evaluation of the lowest-order hadronic vacuum polarization contribution to the muon…
Pseudoscalar transition form factors and the hadronic light-by-light contribution to the muon
Antoine Gérardin, Jana N. Guenther, Lukas Varnhorst +1
We present preliminary results from our calculation of the pseudoscalar transition form factors of the and mesons using staggered quarks on gauge ensembles gen…
Real time dynamics of a semiclassical gravitational collapse of a scalar quantum field
Jana N. Guenther, Christian Hoelbling, Lukas Varnhorst
We present a new formalism for numerically treating the semiclassical gravitational collapse of a scalar quantum field in the radially symmetric case. Our formalism is time reversa…
Semiclassical gravitational collapse of a radially symmetric massless scalar quantum field
Jana N. Guenther, Christian Hoelbling, Lukas Varnhorst
We present a method to study the semiclassical gravitational collapse of a radially symmetric scalar quantum field in a coherent initial state. The formalism utilizes a Fock space…
Leading hadronic contribution to the muon magnetic moment from lattice QCD
Sz. Borsanyi, Z. Fodor, J. N. Guenther +11
We compute the leading order hadronic vacuum polarization (LO-HVP) contribution to the anomalous magnetic moment of the muon, , using lattice QCD. Calculations are perform…
Up and down quark masses and corrections to Dashen's theorem from lattice QCD and quenched QED
L. Varnhorst, S. Durr, Z. Fodor +6
We present a determination of the corrections to Dashen's theorem and of the individual up and down quark masses from a lattice calculation based on quenched QED and QCD…
Up and down quark masses and corrections to Dashen's theorem from lattice QCD and quenched QED
Z. Fodor, C. Hoelbling, S. Krieg +6
In a previous letter (arXiv:1306.2287) we determined the isospin mass splittings of the baryon octet from a lattice calculation based on quenched QED and QCD simulati…
Leptonic decay-constant ratio from lattice QCD using 2+1 clover-improved fermion flavors with 2-HEX smearing
Stephan Dürr, Zoltán Fodor, Christian Hoelbling +8
We present a calculation of the leptonic decay-constant ratio in 2+1 flavor QCD. Our data set includes five lattice spacings and pion masses reaching down below the physi…
Lattice computation of the nucleon scalar quark contents at the physical point
S. Durr, Z. Fodor, C. Hoelbling +10
We present a QCD calculation of the , and scalar quark contents of nucleons based on lattice ensembles with dynamical sea quarks, lattice spacings d…
A recursive approach to determine correlation functions in multi-baryon systems
Jana Günther, Bálint C. Tóth, Lukas Varnhorst
We propose a recursive algorithm for the calculation of multi-baryon correlation functions that combines the advantages of a recursive approach with those of the recently proposed…