Simulation of dynamical (u,d,s,c) domain-wall/overlap quarks at the physical pointWe perform hybrid Monte-Carlo simulation of Nf=2+1+1 lattice QCD with domain-wall quarks at the physical point. The simulation is carried out on the L3 × T = 643 × 64 lattice with…Ting-Wai Chiu·Nov 20, 2018SaveLearn
Solving DWF Dirac Equation Using Multisplitting Preconditioned Conjugate GradientWe show that using the multisplitting algorithm as a preconditioner for conjugate gradient inversion of the domain wall fermion Dirac operator could effectively reduce the inter-node communication…Jiqun Tu·Nov 20, 2018SaveLearn
Hadronic light-by-light scattering in the anomalous magnetic moment of the muonHadronic light-by-light scattering in the anomalous magnetic moment of the muon aμ is one of two hadronic effects limiting the precision of the Standard Model prediction for this precision…Nils Asmussen, Antoine Gérardin, Andreas Nyffeler et al.·Nov 20, 2018SaveLearn
Wigner - Weyl formalism and the propagator of Wilson fermions in the presence of varying external electromagnetic fieldWe develop Wigner - Weyl formalism for the lattice models. For the definiteness we consider Wilson fermions in the presence of U(1) gauge field. The given technique reduces calculation of the two…M. Suleymanov, M. A. Zubkov·Nov 20, 2018SaveLearn
The fate of axial U(1) in 2+1 flavor QCD towards the chiral limitThe region of the Columbia plot with two light quark flavors is not yet conclusively understood. Non-perturbative effects, e.g. the magnitude of the anomalous U(1) axial symmetry breaking, decides on…Lukas Mazur, Olaf Kaczmarek, Edwin Laermann et al.·Nov 20, 2018SaveLearn
The topological objects near the chiral crossover transition in QCDWe study the underlying topology of gauge fields in 2+1 flavor QCD with domain wall fermions on lattices of size 323× 8, at and immediately above the chiral crossover transition. Using…Rasmus N. Larsen, Sayantan Sharma, Edward Shuryak·Nov 19, 2018SaveLearn
Lattice QCD2 effective action with Bogoliubov transformationsIn the Wilson's lattice formulation of QCD, a fermionic Fock space of states can be explicitly built at each time slice using canonical creation and annihilation operators. The partition function Z…Sergio Caracciolo, Mauro Pastore·Nov 19, 2018SaveLearn
Can the complex Langevin method see the deconfinement phase transition in QCD at finite density?Exploring the phase diagram of QCD at finite density is a challenging problem since first-principle calculations based on standard Monte Carlo methods suffer from the sign problem. As a promising…Shoichiro Tsutsui, Yuta Ito, Hideo Matsufuru et al.·Nov 19, 2018SaveLearn
Nucleon form factors and root-mean-square radii on a (10.8 fm)4 lattice at the physical pointWe present the nucleon form factors and root-mean-square (RMS) radii measured on a (10.8 fm)4 lattice at the physical point. We compute the form factors at small momentum transfer region in…Eigo Shintani, Ken-Ichi Ishikawa, Yoshinobu Kuramashi et al.·Nov 18, 2018SaveLearn
A guide to light-cone PDFs from Lattice QCD: an overview of approaches, techniques and resultsWithin the theory of Quantum Chromodynamics (QCD), the rich structure of hadrons can be quantitatively characterized, among others, using a basis of universal non-perturbative functions: parton…Krzysztof Cichy, Martha Constantinou·Nov 18, 2018SaveLearn
Effective mesonic theory for the 't Hooft model on the latticeWe apply to a lattice version of the 't~Hooft model, QCD in two space-time dimensions for large number of colours, a method recently proposed to obtain an effective mesonic action starting from…Sergio Caracciolo, Mauro Pastore·Nov 16, 2018SaveLearn
Control of SU(3) symmetry breaking effects in calculations of B meson decay constantEarly B-physics experiments have left us with a number of puzzles in heavy flavour physics. New lattice calculations (with a greater understanding of QCD effects in the Standard Model) will be needed…Sophie Hollitt, Roger Horsley, Paul D. Jackson et al.·Nov 16, 2018SaveLearn
On the spectrum and string tension of U(1) lattice gauge theory in 2+1 dimensionsWe calculate the low-lying spectra of glueballs and confining flux tubes in the U(1) lattice gauge theory in 2+1 dimensions. We see that up to modest lattice spacing corrections, the glueball states…Andreas Athenodorou, Michael Teper·Nov 15, 2018SaveLearn
Constraint HMC algorithms for gauge-Higgs modelsWe present the construction of constraint HMC algorithms for gauge-Higgs models in order to measure the effective Higgs potential. In particular we focus on SU(2) Gauge-Higgs Unification models in…Roman Höllwieser, Francesco Knechtli·Nov 15, 2018SaveLearn
Radiative corrections to decay amplitudes in lattice QCDThe precision of lattice QCD computations of many quantities has reached such a precision that isospin-breaking corrections, including electromagnetism, must be included if further progress is to be…Davide Giusti, Vittorio Lubicz, Guido Martinelli et al.·Nov 15, 2018SaveLearn
HAL QCD method and Nucleon-Omega interaction with physical quark massesIn lattice QCD, both direct method and HAL QCD method are used to investigate the two-baryon systems. We show that due to the contamination of the scattering excited states, it is challenging to…Takumi Iritani, for HAL QCD Collaboration·Nov 15, 2018SaveLearn
Disconnected hadronic vacuum polarization contribution to the muon g-2 with HISQWe describe a computation of the contribution to the anomalous magnetic moment of the muon from the disconnected part of the hadronic vacuum polarization. We use the highly-improved staggered quark…Shuhei Yamamoto, Carleton DeTar, Aida X. El-Khadra et al.·Nov 14, 2018SaveLearn
Finite-size scaling for four-dimensional Higgs-Yukawa model near the Gaussian fixed pointWe analyse finite-size scaling behaviour of a four-dimensional Higgs-Yukawa model near the Gaussian infrared fixed point. Through improving the mean-field scaling laws by solving one-loop…David Y. -J Chu, Karl Jansen, Bastian Knippschild et al.·Nov 14, 2018SaveLearn
Renormalized quasi parton distribution function of pionWe present preliminary numerical results on the connected piece of the quasi-PDF of pion as determined using Wilson-Clover valence fermions on HISQ ensembles. We discuss its non-perturbative…Nikhil Karthik, Taku Izubichi, Luchang Jin et al.·Nov 14, 2018SaveLearn
Pion quasi parton distribution function on a fine latticeWe present a calculation of the bare quasi-PDF (qPDF) of the pion. We perform these calculations using the HotQCD HISQ gauge ensemble for our sea quarks along with a Wilson-Clover valence quark…Charles Shugert, Taku Izubichi, Luchang Jin et al.·Nov 14, 2018SaveLearn
Pion and Kaon Distribution Amplitudes from lattice QCD: towards the continuum limitWe present the current status of a non-perturbative lattice calculation of the moments of the pion and kaon distribution amplitudes by the RQCD collaboration. Our investigation is carried out using…Gunnar S. Bali, Vladimir M. Braun, Meinulf Göckeler et al.·Nov 14, 2018SaveLearn
QCD at nonzero isospin asymmetryWe study the phase diagram and the thermodynamic properties of QCD at nonzero isospin asymmetry at physical quark masses with staggered quarks. In particular, continuum results for the phase boundary…Bastian B. Brandt, Gergely Endrodi, Sebastian Schmalzbauer·Nov 14, 2018SaveLearn
A gauge-invariant, rotor Hamiltonian from dual variables of 3D U(1) gauge theoryWe present a tensor formulation for free compact electrodynamics in three Euclidean dimensions and use this formulation to construct a quantum Hamiltonian in the continuous-time limit.…Judah F. Unmuth-Yockey·Nov 14, 2018SaveLearn
Resonance properties from lattice energy levels using chiral effective field theoryWe use the chiral effective field theory to study the lattice finite-volume energy levels from the meson-meson scattering. The hadron resonance properties and the scattering amplitudes at physical…Zhi-Hui Guo, Liuming Liu, Ulf-G. Meissner et al.·Nov 14, 2018SaveLearn
Nuclear Matrix Elements for Neutrinoless Double Beta Decay from Lattice QCDWhile neutrino oscillation experiments have demonstrated that neutrinos have small, nonzero masses, much remains unknown about their properties and decay modes. One potential decay mode ---…W. Detmold, D. J. Murphy·Nov 13, 2018SaveLearn