Axial U(1) symmetry, topology, and Dirac spectra at high temperature in Nf=2 lattice QCDUsing lattice QCD simulations with Nf = 2 dynamical fermions, we study the axial U(1) symmetry, topological charge, and Dirac eigenvalue spectra in the high-temperature phase in which the chiral…Kei Suzuki, Sinya Aoki, Yasumichi Aoki et al.·Aug 29, 2019SaveLearn
Moments of nucleon generalized parton distributions from lattice QCD simulations at physical pion massWe present results for the moments of nucleon isovector vector and axial generalised parton distribution functions computed within lattice QCD. Three ensembles of maximally twisted mass…C. Alexandrou, S. Bacchio, M. Constantinou et al.·Aug 28, 2019SaveLearn
Parton Physics on a Quantum ComputerParton distribution functions and hadronic tensors may be computed on a universal quantum computer without many of the complexities that apply to Euclidean lattice calculations. We detail algorithms…Henry Lamm, Scott Lawrence, Yukari Yamauchi·Aug 27, 2019SaveLearn
Real photon emissions in leptonic decaysWe present a non-perturbative calculation of the form factors which contribute to the amplitudes for the radiative decays P ν γ, where P is a pseudoscalar meson and is a…G. M. de Divitiis, A. Desiderio, M. Di Carlo et al.·Aug 27, 2019SaveLearn
Vector current renormalisation in momentum subtraction schemes using the HISQ actionAs the only lattice vector current that does not require renormalisation is the point-split conserved current it is convenient to have a robust, precise and computationally cheap methodology for the…D. Hatton, C. T. H. Davies, G. P. Lepage et al.·Aug 27, 2019SaveLearn
Parton Distribution Functions from Ioffe time pseudo-distributionsIn this paper, we present a detailed study of the unpolarized nucleon parton distribution function (PDF) employing the approach of parton pseudo-distribution functions. We perform a systematic…Bálint Joó, Joseph Karpie, Kostas Orginos et al.·Aug 26, 2019SaveLearn
Meson Screening Masses in (2+1)-Flavor QCDWe present lattice QCD results for mesonic screening masses in the temperature range 140 MeV T 2500 MeV. Our calculations were carried out using (2+1)-flavors of the Highly…Alexei Bazavov, Simon Dentinger, Heng-Tong Ding et al.·Aug 26, 2019SaveLearn
Chiral Symmetry Breaking on the LatticeWe review important aspects of QCD in the continuum and on the lattice and take a look at the fate of its symmetries with an emphasis on chiral symmetry breaking on the lattice.Manfried Faber, Roman Höllwieser·Aug 23, 2019SaveLearn
The Coulomb flux tube revisitedWe perform SU(2) Yang-Mills lattice simulation of the electric field distribution in the Coulomb gauge for different values of β to further investigate the nature of the Coulomb flux tube.Sebastian M. Dawid, Adam P. Szczepaniak·Aug 23, 2019SaveLearn
Density and correlations of topological objects near the transition temperature in lattice gluodynamicsTopological lumps are known to be present in gluonic fields of SU(3) gluodynamics. Near the transition temperature they were classified either as constituents of nondissociated (anti)calorons, or as…V. G. Bornyakov, E. -M. Ilgenfritz, B. V. Martemyanov·Aug 23, 2019SaveLearn
Lattice simulations with G-parity Boundary ConditionsWe discuss G-parity lattice boundary conditions as a means to impose momentum on the pion ground state without breaking isospin symmetry. This technique is expected to be critical for the precision…Norman Christ, Christopher Kelly, Daiqian Zhang·Aug 23, 2019SaveLearn
Thermal Broadening of Bottomonia: Lattice Non-Relativistic QCD with Extended OperatorsWe present lattice non-relativistic QCD calculations of bottomonium correlation functions at temperatures T 150-350 MeV. The correlation functions were computed using extended bottomonium…Rasmus Larsen, Stefan Meinel, Swagato Mukherjee et al.·Aug 22, 2019SaveLearn
Propagation of particles on a torusIn this study, based on the variational principle and Faddeev method, we present a general framework for finding the propagating solutions of multiple interacting particles on a torus. Two different…Peng Guo·Aug 21, 2019SaveLearn
Sparsening Algorithm for Multi-Hadron Lattice QCD Correlation FunctionsModern advances in algorithms for lattice QCD calculations have steadily driven down the resources required to generate gauge field ensembles and calculate quark propagators, such that, in cases…W. Detmold, D. J. Murphy, A. V. Pochinsky et al.·Aug 19, 2019SaveLearn
Numerical determination of monopole scaling dimension in parity-invariant three-dimensional non-compact QEDWe present a direct Monte-Carlo determination of the scaling dimension of a topological defect operator in the infrared fixed point of a three-dimensional interacting quantum field theory. For this,…Nikhil Karthik, Rajamani Narayanan·Aug 15, 2019SaveLearn
A curious behavior of three-dimensional lattice Dirac operators coupled to monopole backgroundWe investigate numerically the effect of regulating fermions in the presence of singular background fields in three dimensions. For this, we couple free lattice fermions to a background compact U(1)…Nikhil Karthik, Rajamani Narayanan·Aug 14, 2019SaveLearn
Safety versus triviality on the latticeWe present the first numerical study of the ultraviolet dynamics of non-asymptotically free gauge-fermion theories at large number of matter fields. As testbed theories we consider non-abelian SU(2)…Viljami Leino, Tobias Rindlisbacher, Kari Rummukainen et al.·Aug 13, 2019SaveLearn
Phase structure of the 1+1 dimensional massive Thirring model from matrix product statesEmploying matrix product states as an ansatz, we study the non-thermal phase structure of the (1+1)-dimensional massive Thirring model in the sector of vanishing total fermion number with staggered…Mari Carmen Bañuls, Krzysztof Cichy, Ying-Jer Kao et al.·Aug 13, 2019SaveLearn
Accelerating lattice quantum field theory calculations via interpolator optimization using NISQ-era quantum computingThe only known way to study quantum field theories in non-perturbative regimes is using numerical calculations regulated on discrete space-time lattices. Such computations, however, are often faced…A. Avkhadiev, P. E. Shanahan, R. D. Young·Aug 12, 2019SaveLearn
Numerical study of ADE-type N=2 Landau--Ginzburg modelsAt an extremely low-energy scale, it is believed that the two-dimensional N=2 Wess--Zumino model becomes an N=2 superconformal field theory (SCFT). We study this theoretical…Okuto Morikawa·Aug 9, 2019SaveLearn
A Fluctuation Theory of Topological SusceptibilityWe investigate the long-range statistical correlations, whereby discuss the nature of the undermining interacting/ noninteracting domains and associated phase transitions under variations of the…Bhupendra Nath Tiwari·Aug 9, 2019SaveLearn
QCD in the heavy dense regime for general Nc: On the existence of quarkyonic matterLattice QCD with heavy quarks reduces to a three-dimensional effective theory of Polyakov loops, which is amenable to series expansion methods. We analyse the effective theory in the cold and dense…Owe Philipsen, Jonas Scheunert·Aug 8, 2019SaveLearn
Constrained Hybrid Monte Carlo algorithms for gauge-Higgs modelsWe develop Hybrid Monte Carlo (HMC) algorithms for constrained Hamiltonian systems of gauge- Higgs models and introduce a new observable for the constraint effective Higgs potential. We use an…Michael Günther, Roman Höllwieser, Francesco Knechtli·Aug 7, 2019SaveLearn
Numerical exploration of three relativistic particles in a finite volume including two-particle resonances and bound statesIn this work, we use an extension of the quantization condition, given in Ref. [1], to numerically explore the finite-volume spectrum of three relativistic particles, in the case that two-particle…Fernando Romero-López, Stephen R. Sharpe, Tyler D. Blanton et al.·Aug 7, 2019SaveLearn
A cross-channel study of pion scattering from lattice QCDWe use a chiral model for pion interactions, in the inverse amplitude formalism, to perform a simultaneous analysis of lattice QCD results for pion-pion scattering in all three isospin channels. The…Maxim Mai, Chris Culver, Andrei Alexandru et al.·Aug 5, 2019SaveLearn