Topological susceptibility near Tc in SU(3) gauge theoryTopological charge susceptibility χt for pure gauge SU(3) theory at finite temperature is studied using anisotropic lattices. The over-improved stout-link smoothing method is utilized to…Guang-Yi Xiong, Jian-Bo Zhang, Ying Chen et al.·Aug 31, 2015SaveLearn
The Nf= 2 chiral phase transition from imaginary chemical potential with Wilson FermionsThe order of the thermal transition in the chiral limit of QCD with two dynamical flavours of quarks is a long-standing issue. Still, it is not definitely known whether the transition is of first or…Owe Philipsen, Christopher Pinke·Aug 31, 2015SaveLearn
Critical line of 2+1 flavor QCD: Toward the continuum limitWe determine the continuum limit of the curvature of the pseudocritical line of QCD with nf=2+1 staggered fermions at nonzero temperature and quark density. We perform Monte Carlo simulations at…Paolo Cea, Leonardo Cosmai, Alessandro Papa·Aug 30, 2015SaveLearn
Confining Bond Rearrangement in the Random Center Vortex ModelWe present static meson-meson and baryon--anti-baryon potentials in Z(2) and Z(3) random center vortex models for the infrared sector of Yang-Mills theory, i.e., hypercubic lattice models of random…Derar Altarawneh, Roman Höllwieser, Michael Engelhardt·Aug 30, 2015SaveLearn
Two Nucleon Systems at mπ 450~ MeV from Lattice QCDNucleon-nucleon systems are studied with lattice quantum chromodynamics at a pion mass of mπ 450~ MeV in three spatial volumes using nf=2+1 flavors of light quarks. At the quark masses…Kostas Orginos, Assumpta Parreno, Martin J. Savage et al.·Aug 30, 2015SaveLearn
Metadynamics Surfing on Topology Barriers: the CPN-1 CaseAs one approaches the continuum limit, QCD systems, investigated via numerical simulations, remain trapped in sectors of field space with fixed topological charge. As a consequence the numerical…Alessandro Laio, Guido Martinelli, Francesco Sanfilippo·Aug 28, 2015SaveLearn
Lattice study on QCD-like theory with exact center symmetryWe investigate QCD-like theory with exact center symmetry, with emphasis on the finite-temperature phase transition concerning center and chiral symmetries. On the lattice, we formulate center…Takumi Iritani, Etsuko Itou, Tatsuhiro Misumi·Aug 28, 2015SaveLearn
Nonrelativistic lattice study of stoponiumWe calculate the bound state properties of stoponium using lattice formulation of nonrelativistic effective field theory for stop which is moving nonrelativistically in the rest frame of stoponium.…Seyong Kim·Aug 28, 2015SaveLearn
Lattice studies of charmonia and exoticsThe lattice QCD simulations of charmonia and exotic charmonium-like states are reviewed. I report on the first exploratory simulation of charmonium resonances above open charm threshold which takes…Sasa Prelovsek·Aug 28, 2015SaveLearn
Finite Volume for Three-Flavour Partially Quenched Chiral Perturbation Theory through NNLO in the Meson SectorWe present a calculation of the finite volume corrections to meson masses and decay constants in three flavour Partially Quenched Chiral Perturbation Theory (PQChPT) through two-loop order in the…Johan Bijnens, Thomas Rössler·Aug 28, 2015SaveLearn
Charmed baryons on the latticeWe discuss the significance of charm baryon spectroscopy in hadron physics and review the recent developments of the spectra of charmed baryons in lattice calculations. Special emphasis is given on…M. Padmanath, Nilmani Mathur·Aug 28, 2015SaveLearn
Prospects and status of quark mass renormalization in three-flavour QCDWe present the current status of a revised strategy to compute the running of renormalized quark masses in QCD with three flavours of massless O(a) improved Wilson quarks. The strategy employed uses…I. Campos, P. Fritzsch, C. Pena et al.·Aug 27, 2015SaveLearn
Non-perturbative tests of continuum HQET through small-volume two-flavour QCDWe study the heavy quark mass dependence of selected observables constructed from heavy-light meson correlation functions in small-volume two-flavour lattice QCD after taking the continuum limit. The…P. Fritzsch, N. Garron, J. Heitger·Aug 27, 2015SaveLearn
Axion cosmology, lattice QCD and the dilute instanton gasAxions are one of the most attractive dark matter candidates. The evolution of their number density in the early universe can be determined by calculating the topological susceptibility χ(T) of QCD…S. Borsanyi, M. Dierigl, Z. Fodor et al.·Aug 27, 2015SaveLearn
Disconnected contributions to the spin of the nucleonThe spin decomposition of the proton is a long-standing topic of much interest in hadronic physics. Lattice QCD has had much success in calculating the connected contributions to the quark spin.…A. J. Chambers, R. Horsley, Y. Nakamura et al.·Aug 27, 2015SaveLearn
Isospin splittings of meson and baryon masses from three-flavor lattice QCD + QEDLattice QCD simulations are now reaching a precision where isospin breaking effects become important. Previously, we have developed a program to systematically investigate the pattern of flavor…R. Horsley, Y. Nakamura, H. Perlt et al.·Aug 26, 2015SaveLearn
Delta expansion and Wilson fermion in the Gross-Neveu model: Compatibility with linear divergence and continuum limit from inverse-mass expansionWe apply the δ-expansion to the Gross-Neveu model in the large N limit with Wilson fermion and investigate dynamical mass generation from inverse-mass expansion. The dimensionless mass M…Hirofumi Yamada·Aug 26, 2015SaveLearn
Unitary Limit of Two-Nucleon Interactions in Strong Magnetic FieldsTwo-nucleon systems are shown to exhibit large scattering lengths in strong magnetic fields at unphysical quark masses, and the trends toward the physical values indicate that such features may exist…William Detmold, Kostas Orginos, Assumpta Parreno et al.·Aug 24, 2015SaveLearn
Wilson flow and scale setting from lattice QCDWe give a determination of the phenomenological value of the Wilson (or gradient) flow scales t0 and w0 for 2+1 flavours of dynamical quarks. The simulations are performed keeping the average quark…V. G. Bornyakov, R. Horsley, R. Hudspith et al.·Aug 24, 2015SaveLearn
The sigma meson from lattice QCD with two-pion interpolating operatorsIn this article we describe our studies of the sigma meson, f0(500), using two-pion correlation functions. We use lattice quantum chromodynamics in the quenched approximation with so-called clover…Dean Howarth, Joel Giedt·Aug 23, 2015SaveLearn
Symanzik improvement of the gradient flow in lattice gauge theoriesWe apply the Symanzik improvement programme to the 4+1-dimensional local re-formulation of the gradient flow in pure SU(N) lattice gauge theories. We show that the classical nature of the flow…A. Ramos, S. Sint·Aug 23, 2015SaveLearn
Complex Langevin dynamics for dynamical QCD at nonzero chemical potential: a comparison with multi-parameter reweightingWe study lattice QCD at non-vanishing chemical potential using the complex Langevin equation. We compare the results with multi-parameter reweighting both from μ=0 and phase quenched ensembles. We…Z. Fodor, S. D. Katz, D. Sexty et al.·Aug 21, 2015SaveLearn
Complex Langevin in low-dimensional QCD: the good and the not-so-goodWe present our latest results on the application of the complex Langevin method to one- and two-dimensional QCD. Although the method is stable, it unfortunately converges to an incorrect result when…Jacques Bloch, Johannes Mahr, Sebastian Schmalzbauer·Aug 21, 2015SaveLearn
Effective lattice action for the configurations smeared by the Wilson flowWe investigate a trajectory for the Wilson flow in the theory space. For this purpose, we determine the coefficient of the plaquette and rectangular terms in the action for the configurations defined…Aya Kagimura, Akio Tomiya, Ryo Yamamura·Aug 20, 2015SaveLearn
A non-perturbative estimate of the heavy quark momentum diffusion coefficientWe estimate the momentum diffusion coefficient of a heavy quark within a pure SU(3) plasma at a temperature of about 1.5Tc. Large-scale Monte Carlo simulations on a series of lattices extending up to…A. Francis, O. Kaczmarek, M. Laine et al.·Aug 19, 2015SaveLearn