The model dependence of m / fπShould a strongly coupled composite Higgs boson scenario be realized in Nature the most easily accessible experimental signal would be new particles made up of the same ingredients as the Higgs but…Daniel Nogradi, Lorinc Szikszai·Dec 9, 2019SaveLearn
Meron- and Semi-Vortex-Clusters as Physical Carriers of Topological Charge and VorticityIn O(N) non-linear σ-models on the lattice, the Wolff cluster algorithm is based on rewriting the functional integral in terms of mutually independent clusters. Through improved estimators, the…Wolfgang Bietenholz, João C. Pinto Barros, Stephan Caspar et al.·Dec 9, 2019SaveLearn
Does confinement imply CP invariance of the strong interactions?The strong coupling constant 1/g2 and the vacuum angle θ of the SU(3) Yang-Mills theory are investigated in the infrared limit under the renormalization group flow. It is shown that the theory…Y. Nakamura, G. Schierholz·Dec 9, 2019SaveLearn
The hadronic vacuum polarization of the muon from four-flavor lattice QCDWe present an update on the ongoing calculations by the Fermilab Lattice, HPQCD, and MILC Collaboration of the leading-order (in electromagnetism) hadronic vacuum polarization contribution to the…C. T. H. Davies, C. E. DeTar, A. X. El-Khadra et al.·Dec 9, 2019SaveLearn
Computing general observables in lattice models with complex actionsThe study of QFTs at finite density is hindered by the presence of the so-called sign problem. The action definition of such systems is, in fact, complex-valued making standard importance sampling…Olmo Francesconi, Markus Holzmann, Biagio Lucini et al.·Dec 9, 2019SaveLearn
EspressoDB: A scientific database for managing high-performance computing workflowLeadership computing facilities around the world support cutting-edge scientific research across a broad spectrum of disciplines including understanding climate change, combating opioid addiction, or…Chia Cheng Chang, Christopher Körber, André Walker-Loud·Dec 8, 2019SaveLearn
The confining color field in SU(3) gauge theoryWe extend a previous numerical study of SU(3) Yang-Mills theory in which we measured the spatial distribution of all components of the color fields surrounding a static quark-antiquark pair for a…M. Baker, P. Cea, V. Chelnokov et al.·Dec 8, 2019SaveLearn
2019 Update on K with lattice QCD inputsWe present updated results for K determined directly from the standard model (SM) with lattice QCD inputs such as BK, |Vcb|, |Vus|, ξ0, ξ2, ξLD,…Jeehun Kim, Sunkyu Lee, Weonjong Lee et al.·Dec 6, 2019SaveLearn
Zb tetraquark channel from lattice QCD and Born-Oppenheimer approximationTwo Zb hadrons with exotic quark structure bb du were discovered by Belle experiment. We present a lattice QCD study of the bb du system in the approximation of static b…S. Prelovsek, H. Bahtiyar, J. Petkovic·Dec 5, 2019SaveLearn
B πν form factors and |Vub| with Möbius domain wall fermionsWe report on a calculation of form factors for the semileptonic decay of B meson to pion on 2+1-flavour lattices with lattice spacings from 0.080 fm down to 0.044 fm. Using the Möbius domain wall…Brian Colquhoun, Shoji Hashimoto, Takashi Kaneko et al.·Dec 5, 2019SaveLearn
Disconnected Loop Subtraction Methods in Lattice QCDNoise subtraction methods are a set of techniques that aim to reduce the variance of signals in LQCD which are often flooded with noise. The standard approach is a pertubative subtraction. In this…Travis Whyte, Suman Baral, Paul Lashomb et al.·Dec 5, 2019SaveLearn
Deflated GMRES with Multigrid for Lattice QCDLattice QCD solvers encounter critical slowing down for fine lattice spacings and small quark mass. Traditional matrix eigenvalue deflation is one approach to mitigating this problem. However, to…Travis Whyte, Walter Wilcox, Ronald B. Morgan·Dec 5, 2019SaveLearn
θ-dependence and center symmetry in Yang-Mills theoriesWe investigate the relation between the realization of center symmetry and the dependence on the topological parameter θ in SU(N) Yang-Mills theories, exploiting trace deformations as a tool to…Claudio Bonati, Marco Cardinali, Massimo D'Elia et al.·Dec 5, 2019SaveLearn
Improving center vortex detection by usage of center regions as guidance for the direct maximal center gaugeThe center vortex model of quantum chromodynamic states that vortices, closed color-magnetic flux, percolate the vacuum. Vortices are seen as the relevant excitations of the vacuum, causing…Rudolf Golubich, Manfried Faber·Dec 5, 2019SaveLearn
Renormalization group on a triad networkWe propose a new renormalization scheme of tensor networks made only of third order tensors. The isometry used for coarse-graining the network can be prepared at an O(D6) computational cost in any…Daisuke Kadoh, Katsumasa Nakayama·Dec 5, 2019SaveLearn
Logarithmic corrections to a2 scaling in lattice Yang Mills theoryWe analyse the leading logarithmic corrections to the a2 scaling of lattice artefacts in QCD, following the seminal work of Balog, Niedermayer and Weisz in the O(n) non-linear sigma model.…Nikolai Husung, Peter Marquard, Rainer Sommer·Dec 4, 2019SaveLearn
Lattice calculation of the hadronic leading order contribution to the muon g-2The persistent discrepancy of about 3.5 standard deviations between the experimental measurement and the Standard Model prediction for the muon anomalous magnetic moment, aμ, is one of the most…H. Wittig, A. Gérardin, Marco Cè et al.·Dec 4, 2019SaveLearn
Stochastic Renormalization Group and Gradient Flow in Scalar Field TheoryRecently, the connections between gradient flow and renormalization group have been explored analytically and numerically. Gradient flow (when modified by a field rescaling) can be characterized as a…Andrea Carosso, Anna Hasenfratz, Ethan T. Neil·Dec 4, 2019SaveLearn
Large Nc behaviour of lattice QCD in the heavy dense regimeCombining strong coupling and hopping expansion one can derive a dimensionally reduced effective theory of lattice QCD. This theory has a reduced sign problem, is amenable to analytic evaluation and…Owe Philipsen, Jonas Scheunert·Dec 3, 2019SaveLearn
The Yang-Mills deconfinement transition from a high temperature expansionThe high temperature expansion is an analytical tool to study critical phenomena in statistical mechanics. We apply this method to 3d effective theories of Polyakov loops, which have been derived…Jangho Kim, Anh Quang Pham, Owe Philipsen et al.·Dec 3, 2019SaveLearn
Chiral Condensate and Susceptibility of SU(2) nf=8 Naive Staggered SystemThe SU(2) gauge theory with 8 fundamental fermions is studied using unimproved staggered regularization. A phase transition or a crossover at strong coupling, which can be a bulk transition. By using…Issaku Kanamori, C. -J. David Lin·Dec 3, 2019SaveLearn
Zeta-regularized vacuum expectation values from quantum computing simulationsThe zeta-regularization allows to establish a connection between Feynman's path integral and Fourier integral operator zeta-functions. This fact can be utilized to perform the regularization of…Karl Jansen, Tobias Hartung·Dec 3, 2019SaveLearn
Quark confinement in the Yang-Mills theory with a gauge-invariant gluon mass in view of the gauge-invariant BEH mechanismIn order to clarify the mechanism of quark confinement in the Yang-Mills theory with mass gap, we propose to investigate the massive Yang-Mills model, namely, Yang-Mills theory with ``a…Akihiro Shibata, Kei-Ichi Kondo, Ryutaro Matsudo et al.·Dec 3, 2019SaveLearn
Heavy quark momentum diffusion coefficient from the latticeWe 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(3) gauge theory.…Nora Brambilla, Viljami Leino, Peter Petreczky et al.·Dec 2, 2019SaveLearn
Symmetries of the light hadron spectrum in high temperature QCDProperties of QCD matter change significantly around the chiral crossover temperature, and the effects on U(1)A and topological susceptibilities, as well as the meson spectrum have been studied…C. Rohrhofer, Y. Aoki, G. Cossu et al.·Dec 2, 2019SaveLearn