QEX: a framework for lattice field theoriesWe present a new software framework for simulating lattice field theories. It features an intuitive programming interface, while simultaneously achieving high performance supercomputing, all in one…Xiao-Yong Jin, James C. Osborn·Dec 8, 2016SaveLearn
Non-equilibrium study of the Chiral Magnetic Effect from real-time simulations with dynamical fermionsWe present a real-time lattice approach to study the non-equilibrium dynamics of vector and axial charges in SU(N) × U(1) gauge theories. Based on a classical description of the non-Abelian…Mark Mace, Niklas Mueller, Sören Schlichting et al.·Dec 7, 2016SaveLearn
Slope and curvature of the hadron vacuum polarization at vanishing virtuality from lattice QCDWe compute the slope and curvature, at vanishing four-momentum transfer squared, of the leading order hadron vacuum polarization function, using lattice QCD. Calculations are performed with 2+1+1…Sz. Borsanyi, Z. Fodor, T. Kawanai et al.·Dec 7, 2016SaveLearn
Thermodynamics of strongly interacting plasma with high accuracyThe equation of state of SU(3) Yang-Mills theory is investigated in the framework of a moving reference frame. Results for the entropy density, the pressure, the energy density, and the trace…Leonardo Giusti, Michele Pepe·Dec 7, 2016SaveLearn
Sea quark QED effects and twisted mass fermionsWe show that maximally twisted mass fermions can be employed to regularize on the lattice the fully unquenched QCD+QED theory with vanishing θ-term. We discuss how the critical mass of the up and…Roberto Frezzotti, Giancarlo Rossi, Nazario Tantalo·Dec 7, 2016SaveLearn
Isospin-0 ππ s-wave scattering length from twisted mass lattice QCDWe present results for the isospin-0 ππ s-wave scattering length calculated with Osterwalder-Seiler valence quarks on Wilson twisted mass gauge configurations. We use three Nf = 2 ensembles with…L. Liu, S. Bacchio, P. Dimopoulos et al.·Dec 6, 2016SaveLearn
Evidence of effective axial U(1) symmetry restoration at high temperature QCDWe study the axial U(1) symmetry at finite temperature in two-flavor lattice QCD. Employing the Mobius domain-wall fermions, we generate gauge configurations slightly above the critical temperature…A. Tomiya, G. Cossu, S. Aoki et al.·Dec 6, 2016SaveLearn
Numerical determination of the Λ-parameter in SU(3) gauge theory from the twisted gradient flow couplingWe estimate the Λ-parameter in the MS scheme for the SU(3) pure gauge theory with the twisted gradient flow method non-perturbatively. We obtain…Ken-Ichi Ishikawa, Issaku Kanamori, Yuko Murakami et al.·Dec 6, 2016SaveLearn
Probing QCD perturbation theory at high energies with continuum extrapolated lattice dataPrecision tests of QCD perturbation theory are not readily available from experimental data. The main reasons are systematic uncertainties due to the confinement of quarks and gluons, as well as…Stefan Sint·Dec 6, 2016SaveLearn
Numerical Analysis of Discretized N=(2,2) SYM on PolyhedraWe perform a numerical simulation of the two-dimensional N=(2,2) supersymmetric Yang-Mills (SYM) theory on the discretized curved space. The U(1)A anomaly of the continuum theory is…Syo Kamata, So Matsuura, Tatsuhiro Misumi et al.·Dec 6, 2016SaveLearn
Abelian spatial string tension in finite temperature SU(2) gauge theoryWe investigate Abelian and monopole contributions to spatial string tension in the deconfined phase of finite temperature SU(2) gauge theory without imposing any gauge fixing conditions. Lattice…Takashige Sekiguchi, Katsuya Ishiguro·Dec 6, 2016SaveLearn
New simulation strategies for lattice gauge theoryDespite the numerous successful applications of lattice QCD in nuclear and particle theory, fundamental algorithmic challenges remain. Among those, relevant for numerical studies of QCD on a…Michael G. Endres·Dec 6, 2016SaveLearn
Quasi parton distributions and the gradient flowWe propose a new approach to determining quasi parton distribution functions (PDFs) from lattice quantum chromodynamics. By incorporating the gradient flow, this method guarantees that the lattice…Christopher Monahan, Kostas Orginos·Dec 5, 2016SaveLearn
Lattice QCD spectroscopy for hadronic CP violationThe interpretation of nuclear electric dipole moment (EDM) experiments is clouded by large theoretical uncertainties associated with nonperturbative matrix elements. In various beyond-the-Standard…Jordy de Vries, Emanuele Mereghetti, Chien-Yeah Seng et al.·Dec 5, 2016SaveLearn
Wilson chiral perturbation theory for dynamical twisted mass fermions vs lattice data - a case studyWe compute the low lying eigenvalues of the Hermitian Dirac operator in lattice QCD with N f = 2+1+1 twisted mass fermions. We discuss whether these eigenvalues are in the ε-regime or the…Krzysztof Cichy, Savvas Zafeiropoulos·Dec 5, 2016SaveLearn
Pion structure from twisted mass lattice QCD down to the physical pion massWe present an investigation of pion structure based on ETMC Nf=2 and Nf=2+1+1 twisted mass configurations at maximal twist. We compute the first moment of the quark momentum fraction of the…Bartosz Kostrzewa, Maximilian Oehm, Francesco Sanfilippo et al.·Dec 5, 2016SaveLearn
Bloch Waves in Minimal Landau Gauge and the Infinite-Volume Limit of Lattice Gauge TheoryBy exploiting the similarity between Bloch's theorem for electrons in crystalline solids and the problem of Landau gauge-fixing in Yang-Mills theory on a "replicated" lattice, one is able…Attilio Cucchieri, Tereza Mendes·Dec 5, 2016SaveLearn
Real-time simulation of the Schwinger effect with Matrix Product StatesMatrix Product States (MPS) are used for the simulation of the real-time dynamics induced by an electric quench on the vacuum state of the massive Schwinger model. For small quenches it is found that…Boye Buyens, Jutho Haegeman, Florian Hebenstreit et al.·Dec 2, 2016SaveLearn
O(3) model with Nienhuis actionWe study the O(3) sigma model in D=2 on the lattice with a Boltzmann weight linearized in β on each link. While the spin formulation now suffers from a sign-problem the equivalent loop model…Ferenc Niedermayer, Ulli Wolff·Dec 2, 2016SaveLearn
Spontaneous symmetry breaking induced by complex fermion determinant --- yet another success of the complex Langevin methodIn many interesting systems, the fermion determinant becomes complex and its phase plays a crucial role in the determination of the vacuum. For instance, in finite density QCD at low temperature and…Yuta Ito, Jun Nishimura·Dec 2, 2016SaveLearn
Equation of state of the SU(3) Yang-Mills theory: a precise determination from a moving frameThe equation of state of the SU(3) Yang-Mills theory is determined in the deconfined phase with a precision of about 0.5%. The calculation is carried out by numerical simulations of lattice gauge…Leonardo Giusti, Michele Pepe·Dec 1, 2016SaveLearn
Energy--momentum tensor on the lattice: recent developmentsIt is conceivable that the construction of the energy--momentum tensor (EMT) in lattice field theory enlarges our ability in lattice field theory and also deepens our understanding on EMT at the…Hiroshi Suzuki·Dec 1, 2016SaveLearn
Electromagnetic corrections to leptonic decay rates of charged pseudoscalar mesons: finite-volume effectsIn Carrasco et al. we have recently proposed a method to calculate O(e2) electromagnetic corrections to leptonic decay widths of pseudoscalar mesons. The method is based on the observation that…N. Tantalo, V. Lubicz, G. Martinelli et al.·Dec 1, 2016SaveLearn
Six-dimensional regularization of chiral gauge theories on a latticeWe propose a six-dimensional regularization of four dimensional chiral gauge theories. We consider a massive Dirac fermion in six dimensions with two different operators having domain-wall profiles…Hidenori Fukaya, Tetsuya Onogi, Shota Yamamoto et al.·Dec 1, 2016SaveLearn
Exponential reduction of finite volume effects with twisted boundary conditionsFlavor-twisted boundary conditions can be used for exponential reduction of finite volume artifacts in flavor-averaged observables in lattice QCD calculations with SU(Nf) light quark flavor…Aleksey Cherman, Srimoyee Sen, Michael L. Wagman et al.·Dec 1, 2016SaveLearn