x-dependence reconstruction of pion and kaon PDFs from Mellin momentsWe present a calculation of the connected-diagram contributions to the first three non-trivial Mellin moments for the pion and kaon, extracted using local operators with up to 3 covariant…Constantia Alexandrou, Simone Bacchio, Ian Cloët et al.·Dec 7, 2021SaveLearn
Three-dimensional O(N)-invariant φ4 models at criticality for N 4We study the O(N)-invariant φ4 model on the simple cubic lattice by using Monte Carlo simulations. By using a finite size scaling analysis, we obtain accurate estimates for the critical…Martin Hasenbusch·Dec 7, 2021SaveLearn
Pion-pole contribution to HLbL from twisted mass lattice QCD at the physical pointWe report on our computation of the pion transition form factor FP→ γ*γ* from twisted mass lattice QCD in order to determine the numerically dominant light…Sebastian Burri, Constantia Alexandrou, Simone Bacchio et al.·Dec 7, 2021SaveLearn
Renormalization constants of overlap quark bilinear operators from RI/MOM and RI/SMOM schemeWe calculate the renormalization constants (RCs) of vector, axial, vector scalar, pseudoscalar and tensor quark operators of the overlap valence fermion, on the 11 gauge ensembles with dynamical…Fangcheng He, Yi-Bo Yang·Dec 7, 2021SaveLearn
Coupling Yang-Mills with Causal Dynamical TriangulationsWe discuss the algorithmic problem of minimal coupling gauge fields of the Yang-Mills type to Quantum Gravity in the approach known as Causal Dynamical Triangulations (CDT) as a step towards…Alessandro Candido, Giuseppe Clemente, Massimo D'Elia et al.·Dec 6, 2021SaveLearn
First Glimpse into the Kaon Gluon Parton Distribution Using Lattice QCDIn this work, we present the first results on the gluon parton distribution of the kaon from lattice quantum chromodynamics. We carry out the lattice calculation at pion mass around 310~MeV and two…Alejandro Salas-Chavira, Zhouyou Fan, Huey-Wen Lin·Dec 6, 2021SaveLearn
Charmed semileptonics with twisted-mass valence quarksOur charm program uses a mixed action with twisted-mass valence quarks over non-perturbatively improved Wilson sea quarks, in order to study various quantities in a relativistic and manifestly local…Julien Frison, Gregorio Herdoiza, Carlos Pena et al.·Dec 6, 2021SaveLearn
Properties of Overlap and Domain Wall Fermions in the 2+1D Thirring ModelWe present some results pertaining to partially quenched formulations of the overlap/domain wall operator with the Thirring model in 2+1D. Auxiliary fields are generated with a Shamir domain wall…Jude Worthy, Simon Hands·Dec 6, 2021SaveLearn
Topology in high-T QCD via staggered spectral projectorsWe present preliminary lattice results for the topological susceptibility in high-T Nf=2+1 QCD obtained discretizing this observable via spectral projectors on eigenmodes of the staggered…Andreas Athenodorou, Claudio Bonanno, Claudio Bonati et al.·Dec 6, 2021SaveLearn
Complex Langevin boundary terms in lattice modelsIn complex Langevin simulations, the insufficient decay of the probability density near infinity leads to boundary terms that spoil the formal argument for correctness. We present a formulation of…Michael W. Hansen, Erhard Seiler, Dénes Sexty et al.·Dec 6, 2021SaveLearn
Multi-level computation of the hadronic vacuum polarization contribution to (gμ-2)The first results from the Fermilab E989 experiment have confirmed the long-standing tension between the experimental determination of the muon anomalous magnetic moment aμ=(gμ-2)/2 and its…Leonardo Giusti, Mattia Dalla Brida, Tim Harris et al.·Dec 5, 2021SaveLearn
Quantifying corrections to the hadron resonance gas with lattice QCDThe hadron resonance gas (HRG) model and its extensions are often used to describe the hadronic phase of strongly interacting matter. In our work we use lattice-QCD simulations with temporal extents…Rene Bellwied, Szabolcs Borsányi, Zoltán Fodor et al.·Dec 4, 2021SaveLearn
Lattice QCD noise reduction for bosonic correlators through blockingWe propose a method to substantially improve the signal-to-noise ratio of lattice correlation functions for bosonic operators or other operator combinations with disconnected contributions. The…Luis Altenkort, Alexander M. Eller, O. Kaczmarek et al.·Dec 4, 2021SaveLearn
Finite temperature QCD with physical (u/d, s, c) domain-wall quarksIn order to understand the role of QCD in the early universe, we perform hybrid Monte-Carlo simulation of lattice QCD with Nf=2+1+1 optimal domain-wall quarks at the physical point, on the $643…Yu-Chih Chen, Ting-Wai Chiu, Tung-Han Hsieh·Dec 4, 2021SaveLearn
Inhomogeneous Phases in the Chiral Gross-Neveu Model on the LatticeWe discuss possible existence of inhomogeneous phase in low temperature and high density region in the 1+1 dimensional chiral Gross-Neveu ( 2 ) model on the lattice. First we investigate…Keita Horie, Chiho Nonaka·Dec 4, 2021SaveLearn
Lattice QCD Determination of the Bjorken-x Dependence of Parton Distribution Functions at Next-to-next-to-leading OrderWe report the first lattice QCD calculation of pion valence quark distribution with next-to-next-to-leading order perturbative matching correction, which is done using two fine lattices with spacings…Xiang Gao, Andrew D. Hanlon, Swagato Mukherjee et al.·Dec 4, 2021SaveLearn
New approach to lattice QCD at finite density: reweighting without an overlap problemApproaches to finite baryon density lattice QCD usually suffer from uncontrolled systematic uncertainties in addition to the well-known sign problem. We test a method - sign reweighting - that works…Attila Pasztor, Szabolcs Borsanyi, Zoltan Fodor et al.·Dec 3, 2021SaveLearn
Abelian monopoles of the Dirac type and color confinement in QCDWe present results of SU(3) Monte-Carlo studies of a new color confinement scheme due to Abelian-like monopoles of the Dirac type without any gauge-fixing. We get (1) perfect Abelian dominance with…Tsuneo Suzuki, Atsuki Hiraguchi, Katsuya Ishiguro·Dec 3, 2021SaveLearn
Prediction and compression of lattice QCD data using machine learning algorithms on quantum annealerWe present regression and compression algorithms for lattice QCD data utilizing the efficient binary optimization ability of quantum annealers. In the regression algorithm, we encode the correlation…Boram Yoon, Chia Cheng Chang, Garrett T. Kenyon et al.·Dec 3, 2021SaveLearn
Reconstruction of bottomonium spectral functions in thermal QCD using Kernel Ridge RegressionWe discuss results for bottomonium at nonzero temperature obtained using NRQCD on Fastsum Generation 2L ensembles, as part of the Fastsum collaboration's programme to determine the spectrum of the…Sam Offler, Gert Aarts, Chris Allton et al.·Dec 3, 2021SaveLearn
Qubit Regularization and Qubit Embedding AlgebrasQubit regularization is a procedure to regularize the infinite dimensional local Hilbert space of bosonic fields to a finite dimensional one, which is a crucial step when trying to simulate lattice…Hanqing Liu, Shailesh Chandrasekharan·Dec 3, 2021SaveLearn
Spectral reconstruction in NRQCD via the Backus-Gilbert methodWe present progress results from the FASTSUM collaboration's programme to determine the spectrum of the bottomonium system as a function of temperature using a variety of approaches. In this…Benjamin Page, Gert Aarts, Chris Allton et al.·Dec 3, 2021SaveLearn
A fully non-perturbative charm-quark tuning using machine learningWe present a relativistic heavy-quark action tuning for the charm sector on ensembles generated by the CLS consortium. We tune a particular 5-parameter action in an entirely non-perturbative and --…R. J. Hudspith, D. Mohler·Dec 3, 2021SaveLearn
Accessing scattering amplitudes using quantum computersFuture quantum computers may serve as a tool to access non-perturbative real-time correlation functions. In this talk, we discuss the prospects of using these to study Compton scattering for…Raul A. Briceño, Marco A. Carrillo, Juan V. Guerrero et al.·Dec 3, 2021SaveLearn
Optimizing Distillation for charmonium and glueballsWe study the charmonium spectrum on an ensemble with two heavy dynamical quarks with a mass at half the physical charm quark mass. Operators for different quantum numbers are used in the framework of…Francesco Knechtli, Tomasz Korzec, Mike Peardon et al.·Dec 3, 2021SaveLearn