The Λ-parameter in 3-flavour QCD and αs(mZ) by the ALPHA collaborationWe present results by the ALPHA collaboration for the Λ-parameter in 3-flavour QCD and the strong coupling constant at the electroweak scale, αs(mZ), in terms of hadronic quantities computed on…M. Bruno, M. Dalla Brida, P. Fritzsch et al.·Jan 11, 2017SaveLearn
Exploratory Lattice QCD Study of the Rare Kaon Decay K+π+ννWe report a first, complete lattice QCD calculation of the long-distance contribution to the K+π+νν decay within the standard model. This is a second-order weak process involving two…Ziyuan Bai, Norman H. Christ, Xu Feng et al.·Jan 11, 2017SaveLearn
Lattice Generalized Parton Distributions and Form Factors of the NucleonIn these proceedings we discuss recent progress in nucleon structure using lattice QCD simulations at or near the physical value of the pion mass. Main focus will be given in observables such as the…Martha Constantinou·Jan 11, 2017SaveLearn
Lattice QCD with Nf = 2+1+1 domain-wall quarksWe perform hybrid Monte Carlo simulation of (2+1+1)-flavors lattice QCD with the optimal domain-wall fermion (which has the effective 4D Dirac operator exactly equal to the Zolotarev optimal rational…Yu-Chih Chen, Ting-Wai Chiu·Jan 10, 2017SaveLearn
Quark confinement to be caused by Abelian or non-Abelian dual superconductivity in the SU(3) Yang-Mills theoryThe dual superconductivity is a promising mechanism for quark confinement. We have presented a new formulation of the Yang-Mills theory on the lattice that enables us to change the original…Akihiro Shibata, Kei-Ichi Kondo, Seikou Kato et al.·Jan 10, 2017SaveLearn
The decay constants fD and fDs in the continuum limit of Nf=2+1 domain wall lattice QCDWe present results for the decay constants of the D and Ds mesons computed in lattice QCD with Nf=2+1 dynamical flavours. The simulations are based on RBC/UKQCD's domain wall ensembles…Peter A. Boyle, Luigi Del Debbio, Andreas Juttner et al.·Jan 10, 2017SaveLearn
Complex Langevin dynamics and zeroes of the fermion determinantQCD at nonzero baryon chemical potential suffers from the sign problem, due to the complex quark determinant. Complex Langevin dynamics can provide a solution, provided certain conditions are met.…Gert Aarts, Erhard Seiler, Denes Sexty et al.·Jan 9, 2017SaveLearn
Temperature dependence of shear viscosity of SU(3)--gluodynamics within lattice simulationIn this paper we study the shear viscosity temperature dependence of SU(3)--gluodynamics within lattice simulation. To do so, we measure the correlation functions of energy-momentum tensor in the…Nikita Astrakhantsev, Viktor Braguta, Andrey Kotov·Jan 9, 2017SaveLearn
A Note on the Possible Existence of an Instanton-like Self-Dual Solution to Lattice Euclidean GravityThe self-dual solution to lattice Euclidean gravity is constructed. In contrast to the well known Eguchi-Hanson solution to continuous Euclidean Gravity, the lattice solution is asymptotically…S. N. Vergeles·Jan 9, 2017SaveLearn
Flux tubes at Finite TemperatureIn this work, we show the flux tubes of the quark-antiquark and quark-quark at finite temperature for SU(3) Lattice QCD. The chromomagnetic and chromoelectric fields are calculated above and below…Nuno Cardoso, Marco Cardoso, Pedro Bicudo·Jan 6, 2017SaveLearn
Quark orbital dynamics in the proton from Lattice QCD -- from Ji to Jaffe-Manohar orbital angular momentumGiven a Wigner distribution simultaneously characterizing quark transverse positions and momenta in a proton, one can directly evaluate their cross-product, i.e., quark orbital angular momentum. The…M. Engelhardt·Jan 6, 2017SaveLearn
Reweighted complex Langevin and its application to two-dimensional QCDWe present the reweighted complex Langevin method, which enlarges the applicability range of the complex Langevin method by reweighting the complex trajectories. In this reweighting procedure both…Jacques Bloch, Johannes Meisinger, Sebastian Schmalzbauer·Jan 5, 2017SaveLearn
Reweighting complex Langevin trajectoriesAlthough the complex Langevin method can solve the sign problem in simulations of theories with complex actions, the method will yield the wrong results if known validity conditions are not…Jacques Bloch·Jan 4, 2017SaveLearn
D meson semileptonic decays in lattice QCD with Moebius domain-wall quarksWe report on our study of the D meson semileptonic decays in 2+1 flavor lattice QCD. Gauge ensembles are generated at three lattice cutoffs up to 4.5 GeV and with pion masses as low as 300 MeV. We…JLQCD Collaboration, T. Kaneko, B. Fahy et al.·Jan 4, 2017SaveLearn
Simple chromatic properties of gradient flowIt has become customary to use a smoothing algorithm called "gradient flow" to fix the lattice spacing in a simulation, through a parameter called t0. It is shown that in order to keep the…Thomas DeGrand·Jan 3, 2017SaveLearn
On the suitability of the Brillouin action as a kernel to the overlap procedureWe investigate the Brillouin action in terms of its suitability as a kernel to the overlap procedure, with a view on both heavy and light quark physics. We use the diagonal elements of the…Stephan Durr, Giannis Koutsou·Jan 3, 2017SaveLearn
An solvable three-body model in finite volumeIn this work, based on consideration of periodicity and asymptotic forms of wave function, we propose a novel approach to the solution of finite volume three-body problem by mapping a three-body…Peng Guo, Vladimir Gasparian·Jan 2, 2017SaveLearn
Design and optimization of a portable LQCD Monte Carlo code using OpenACCThe present panorama of HPC architectures is extremely heterogeneous, ranging from traditional multi-core CPU processors, supporting a wide class of applications but delivering moderate computing…Claudio Bonati, Enrico Calore, Simone Coscetti et al.·Jan 2, 2017SaveLearn
Heavy-quark meson spectrum tests of the Oktay-Kronfeld actionThe Oktay-Kronfeld (OK) action extends the Fermilab improvement program for massive Wilson fermions to higher order in suitable power-counting schemes. It includes dimension-six and -seven operators…Jon A. Bailey, Yong-Chull Jang, Weonjong Lee et al.·Jan 2, 2017SaveLearn
Volume Dependence of N-Body Bound StatesWe derive the finite-volume correction to the binding energy of an N-particle quantum bound state in a cubic periodic volume. Our results are applicable to bound states with arbitrary composition and…Sebastian König, Dean Lee·Jan 1, 2017SaveLearn
Geometrical clusterization of Polyakov loops in SU(2) lattice gluodynamicsThe liquid droplet formula is applied to an analysis of the properties of geometrical (anti)clusters formed in SU(2) gluodynamics by the Polyakov loops of the same sign. Using this approach, we…A. Ivanytskyi, K. Bugaev, E. Nikonov et al.·Dec 31, 2016SaveLearn
New Physics Searches from Nucleon Matrix Elements in Lattice QCDIn this paper we review recent progress in hadron structure using lattice QCD simulations, with main focus in the evaluation of nucleon matrix elements. We highlight developments that may guide new…Martha Constantinou·Dec 31, 2016SaveLearn
O(4) scaling analysis in two-flavor QCD at finite temperature and density with improved Wilson quarksWe study the curvature of the chiral transition/crossover line between the low-temperature hadronic phase and the high-temperature quark-gluon-plasma phase at low densities, performing simulations of…T. Umeda, S. Ejiri, R. Iwami et al.·Dec 30, 2016SaveLearn
From C to Parton Sea: Bjorken-x Dependence of the PDFsStudying the structure of nucleons is not only important to understanding the strong interactions of quarks and gluons, but also to improving the precision of new-physics searches. Since a broad…Huey-Wen Lin·Dec 30, 2016SaveLearn
Composite Higgs Dynamics on the LatticeWe investigate the spectrum of the SU(2) gauge theory with Nf = 2 flavors of fermions in the fundamental representation, in the continuum, using lattice simulations. This model provides a minimal…Claudio Pica, Vincent Drach, Martin Hansen et al.·Dec 29, 2016SaveLearn