Mellin moments of spin dependent and independent PDFs of the pion and rho mesonWe compute the second moments of pion and rho parton distribution functions (PDFs) in lattice QCD with Nf = 2+1 flavors of improved Wilson fermions. We determine both singlet and non-singlet…Marius Löffler, Philipp Wein, Thomas Wurm et al.·Aug 17, 2021SaveLearn
About the solution of the numerical instability for topological solitons with long range interactionThe computations of solutions of the field equations in the Model of Topological Particles, formulated with a scalar SU(2)-field, have shown instabilities leading to discrepancies between the…Fabian Anmasser, Dominik Theuerkauf, Manfried Faber·Aug 16, 2021SaveLearn
Gauge-Fixed Fourier AccelerationFor an asymptotically free theory, a promising strategy for eliminating Critical Slowing Down (CSD) is na\"ive Fourier acceleration. This requires the introduction of gauge-fixing into the action, in…Ahmed Sheta, Yidi Zhao, Norman H. Christ·Aug 12, 2021SaveLearn
Computing hybrid static potentials at short quark-antiquark separations from fine lattices in SU(3) Yang-Mills theoryWe compute hybrid static potentials in SU(3) lattice Yang-Mills theory at short quark-antiquark separations using four different small lattice spacings as small as 0.04\,fm. The resulting…Carolin Schlosser, Marc Wagner·Aug 11, 2021SaveLearn
Pion Distribution Amplitudes in the Continuum LimitWe present a lattice-QCD calculation of the pion distribution amplitudes using large-momentum effective theory (LaMET). Our calculation is carried out using five ensembles with 2+1+1 flavors of…Nicholas Juliano, Rui Zhang, Carson Honkala et al.·Aug 9, 2021SaveLearn
Critical 1- and 2-point spin correlations for the O(2) model in 3d bounded domainsWe study the critical properties of the 3d O(2) universality class in bounded domains through Monte Carlo simulations of the clock model. We use an improved version of the latter, chosen to…Alessandro Galvani, Giacomo Gori, Andrea Trombettoni·Aug 7, 2021SaveLearn
Two-particle scattering from finite-volume quantization conditions using the plane wave basisWe propose an alternative approach to L\"uscher's formula for extracting two-body scattering phase shifts from finite volume spectra with no reliance on the partial wave expansion. We use an…Lu Meng, E. Epelbaum·Aug 5, 2021SaveLearn
Highly excited pure gauge SU(3) flux tubesFlux tube spectra are expected to have full towers of levels due to the quantization of the string vibrations. We study a spectrum of flux tubes with static quark and antiquark sources with pure…Pedro Bicudo, Nuno Cardoso, Alireza Sharifian·Aug 1, 2021SaveLearn
Finite-size scaling around the critical point in the heavy quark region of QCDFinite-size scaling is investigated in detail around the critical point in the heavy-quark region of nonzero temperature QCD. Numerical simulations are performed with large spatial volumes up to the…Atsushi Kiyohara, Masakiyo Kitazawa, Shinji Ejiri et al.·Jul 31, 2021SaveLearn
Phase structure of the CP(1) model in the presence of a topological θ-termWe numerically study the phase structure of the CP(1) model in the presence of a topological θ-term, a regime afflicted by the sign problem for conventional lattice Monte Carlo simulations.…Katsumasa Nakayama, Lena Funcke, Karl Jansen et al.·Jul 29, 2021SaveLearn
Tensor network approach to 2D Yang-Mills theoriesWe propose a novel tensor network representation for two-dimensional Yang-Mills theories with arbitrary compact gauge groups. In this method, tensor indices are directly given by group elements with…Masafumi Fukuma, Daisuke Kadoh, Nobuyuki Matsumoto·Jul 29, 2021SaveLearn
c Form Factors in Lattice QCDStudying the semileptonic decays of charmed particles is prominent in testing the standard model of particle physics. Motivated by recent experimental progress in weak decays of the charm baryon…Huseyin Bahtiyar·Jul 29, 2021SaveLearn
Lattice QCD study of the elastic and transition form factors of charmed baryonsI review the progress made in calculating the elastic and transition form factors of charmed baryons from lattice simulations.Kadir Utku Can·Jul 28, 2021SaveLearn
c *(1520) form factors from lattice QCD and improved analysis of the b *(1520) and b c*(2595,2625) form factorsWe present the first lattice-QCD calculation of the form factors governing the charm-baryon semileptonic decays c *(1520)+. As in our previous calculation of the…Stefan Meinel, Gumaro Rendon·Jul 28, 2021SaveLearn
Is there any gender/race bias in hep-lat primary publication? Machine-Learning Evaluation of Author Ethnicity and GenderIn this work, we analyze papers that are classified as primary hep-lat to study whether there is any race or gender bias in the journal-publication process. We implement machine learning to predict…Huey-Wen Lin·Jul 27, 2021SaveLearn
Twist-3 partonic distributions from lattice QCDTwist-3 partonic distributions contain important information that characterizes nucleon's structure. In this work, we show our lattice exploration of the twist-3 PDFs gT(x), and hL(x). We also…Shohini Bhattacharya, Krzysztof Cichy, Martha Constantinou et al.·Jul 27, 2021SaveLearn
The Glueball content of ηcWe carry out the first lattice QCD derivation of the mixing energy and the mixing angle of the pseudoscalar charmonium and glueball on two gauge ensembles with Nf=2 degenerate dynamical charm…Renqiang Zhang, Wei Sun, Ying Chen et al.·Jul 27, 2021SaveLearn
On the order of the QCD chiral phase transition for different numbers of quark flavoursThe nature of the QCD chiral phase transition in the limit of vanishing quark masses has remained elusive for a long time, since it cannot be simulated directly on the lattice and is strongly…Francesca Cuteri, Owe Philipsen, Alessandro Sciarra·Jul 27, 2021SaveLearn
From lattice QCD to predictions of scattering phase shifts at the physical pointThe Hadron Spectrum Collaboration (HSC) presented new results on two of their ensembles for s-wave scattering phase shifts in the open-charm sector of QCD. For such ensembles we have made predictions…Xiao-Yu Guo, Yonggoo Heo, Matthias F. M. Lutz·Jul 26, 2021SaveLearn
Lattice QCD calculation of the Collins-Soper kernel from quasi TMDPDFsThis work presents a lattice quantum chromodynamics (QCD) calculation of the nonperturbative Collins-Soper kernel, which describes the rapidity evolution of quark transverse-momentum-dependent parton…Phiala Shanahan, Michael Wagman, Yong Zhao·Jul 26, 2021SaveLearn
First direct lattice calculation of the chiral perturbation theory low-energy constant 7We evaluate by means of lattice QCD calculations the low-energy constant 7 which parametrizes strong isospin effects at NLO in SU(2) chiral perturbation theory. Among all low-energy…R. Frezzotti, G. Gagliardi, V. Lubicz et al.·Jul 25, 2021SaveLearn
The bottomonium melting from screening correlators at high temperatureWe study the bottomonium screening masses in a 2+1 flavor QCD medium on the lattice using the Highly Improved Staggered Quark(HISQ) discretization for the quarks. We focus on a wide temperature range…Peter Petreczky, Sayantan Sharma, Johannes Heinrich Weber·Jul 23, 2021SaveLearn
Charged particles interaction in both a finite volume and a uniform magnetic field II: topological and analytic properties of a magnetic systemIn present work, we discuss some topological features of charged particles interacting a uniform magnetic field in a finite volume. The edge state solutions are presented, as a signature of…Peng Guo, Vladimir Gasparian·Jul 22, 2021SaveLearn
Gluon gravitational structure of hadrons of different spinThe gravitational form factors (GFFs) of hadrons encode the matrix elements of the energy momentum tensor of QCD. These quantities describe how energy, spin, and various mechanical properties of…Dimitra A. Pefkou, Daniel C. Hackett, Phiala E. Shanahan·Jul 21, 2021SaveLearn
Second order cumulants of conserved charge fluctuations revisited I. Vanishing chemical potentialsWe update lattice QCD results for second order cumulants of conserved charge fluctuations and correlations at non-zero temperature and vanishing values of the conserved charge chemical potentials. We…D. Bollweg, J. Goswami, O. Kaczmarek et al.·Jul 21, 2021SaveLearn