The scalar radius of the pion from Lattice QCD in the continuum limitWe extend our study of the pion scalar radius in two-flavour lattice QCD to include two additional lattice spacings as well as lighter pion masses, enabling us to perform a combined chiral and…Vera Gülpers, Georg von Hippel, Hartmut Wittig·Jul 7, 2015SaveLearn
Lattice QCD calculation of hadronic light-by-light scatteringWe perform a lattice QCD calculation of the hadronic light-by-light scattering amplitude in a broad kinematical range. At forward kinematics, the results are compared to a phenomenological analysis…Jeremy Green, Oleksii Gryniuk, Georg von Hippel et al.·Jul 6, 2015SaveLearn
Deconfinement and universality in the 3D U(1) lattice gauge theory at finite temperature: study in the dual formulationWe study analytically and numerically the three-dimensional U(1) lattice gauge theory at finite temperature in the dual formulation. For an appropriate disorder operator, we obtain the…Oleg Borisenko, Volodymyr Chelnokov, Mario Gravina et al.·Jul 3, 2015SaveLearn
Wilson flow with naive staggered quarksScale setting for QCD with two flavours of staggered quarks is examined using Wilson flow over a factor of four change in both the lattice spacing and the pion mass. The statistics needed to keep the…Saumen Datta, Sourendu Gupta, Anirban Lahiri et al.·Jul 3, 2015SaveLearn
The chiral phase transition for lattice QCD with 2 colour-sextet quarksQCD with 2 flavours of massless colour-sextet quarks is studied as a possible walking-Technicolor candidate. We simulate the lattice version of this model at finite temperatures near to the…J. B. Kogut, D. K. Sinclair·Jul 1, 2015SaveLearn
Hadronic vacuum polarization and muon g-2 from magnetic susceptibilities on the latticeWe present and test a new method to compute the hadronic vacuum polarization function in lattice simulations. This can then be used, e.g., to determine the leading hadronic contribution to the…Gunnar Bali, Gergely Endrodi·Jun 29, 2015SaveLearn
Monte Carlo determination of the critical coupling in ϕ42 theoryWe use lattice formulation of ϕ4 theory in order to investigate non--perturbative features of its continuum limit in two dimensions. In particular, by means of Monte Carlo calculations, we obtain…Paolo Bosetti, Barbara De Palma, Marco Guagnelli·Jun 29, 2015SaveLearn
Finite-temperature study of eight-flavor SU(3) gauge theoryWe present new lattice investigations of finite-temperature transitions for SU(3) gauge theory with Nf=8 light flavors. Using nHYP-smeared staggered fermions we are able to explore renormalized…David Schaich, Anna Hasenfratz, Enrico Rinaldi·Jun 29, 2015SaveLearn
Center clusters in full QCD at finite temperature and background magnetic fieldWe study the center structure of full dynamical QCD at finite temperatures and nonzero values of the background magnetic field using continuum extrapolated lattice data. We concentrate on two…Gergely Endrődi, Andreas Schäfer, Jacob Wellnhofer·Jun 25, 2015SaveLearn
Lattice QCD study of the Boer-Mulders effect in a pionThe three-dimensional momenta of quarks inside a hadron are encoded in transverse momentum-dependent parton distribution functions (TMDs). This work presents an exploratory lattice QCD study of a TMD…M. Engelhardt, P. Hägler, B. Musch et al.·Jun 25, 2015SaveLearn
Integrating out lattice gauge fieldsThe sign problem is a major obstacle to our understanding of the phase diagram of QCD at finite baryon density. Several numerical methods have been proposed to tackle this problem, but a full…Helvio Vairinhos, Philippe de Forcrand·Jun 23, 2015SaveLearn
The running coupling of the minimal sextet composite Higgs modelWe compute the renormalized running coupling of SU(3) gauge theory coupled to Nf = 2 flavors of massless Dirac fermions in the 2-index-symmetric (sextet) representation. This model is of particular…Zoltan Fodor, Kieran Holland, Julius Kuti et al.·Jun 22, 2015SaveLearn
Mass anomalous dimension of Adjoint QCD at large N from twisted volume reductionIn this work we consider the SU(N) gauge theory with two Dirac fermions in the adjoint representation, in the limit of large N. In this limit the infinite-volume physics of this model can be…Margarita García Pérez, Antonio González-Arroyo, Liam Keegan et al.·Jun 22, 2015SaveLearn
The B*Bpi coupling using relativistic heavy quarksWe report on a calculation of the B*Bpi coupling in lattice QCD. The strong matrix element for a B* to Bpi transition is directly related to the leading order low-energy constant in heavy meson…J. M. Flynn, P. Fritzsch, T. Kawanai et al.·Jun 21, 2015SaveLearn
Iso-vector and Iso-scalar Tensor Charges of the Nucleon from Lattice QCDWe present results for the iso-vector and flavor diagonal tensor charges gu-dT, guT, gdT, and gsT needed to probe novel tensor interactions at the TeV scale in neutron and…Tanmoy Bhattacharya, Vincenzo Cirigliano, Saul Cohen et al.·Jun 21, 2015SaveLearn
Non-Gaussianities in the topological charge distribution of the SU(3) Yang--Mills theoryWe study the topological charge distribution of the SU(3) Yang--Mills theory with high precision in order to be able to detect deviations from Gaussianity. The computation is carried out on the…Marco Cè, Cristian Consonni, Georg P. Engel et al.·Jun 19, 2015SaveLearn
Five-Dimensional Gauge-Higgs Unification: A Standard Model-Like SpectrumWe study the viability of five-dimensional gauge theories as candidates for the origin of the Higgs field and its mechanism for spontaneous symmetry breaking. Within the framework of lattice field…Maurizio Alberti, Nikos Irges, Francesco Knechtli et al.·Jun 19, 2015SaveLearn
Improved Sampling Algorithms in Lattice QCDReverse Monte Carlo (RMC) is an algorithm that incorporates stochastic modification of the action as part of the process that updates the fields in a Monte Carlo simulation. Such update moves have…Arjun Singh Gambhir, Kostas Orginos·Jun 19, 2015SaveLearn
Chiral symmetry restoration in QCD with many flavoursWe discuss the phases of QCD in the parameter space spanned by the number of light flavours and the temperature with respect to the realisation of chiral and conformal symmetries. The intriguing…M. P. Lombardo, K. Miura, T. J. Nunes da Silva et al.·Jun 19, 2015SaveLearn
The pion quasiparticle in the low-temperature phase of QCDWe investigate the properties of the pion quasiparticle in the low-temperature phase of two-flavor QCD on the lattice with support from chiral effective theory. We find that the pion quasiparticle…Bastian B. Brandt, Anthony Francis, Harvey B. Meyer et al.·Jun 18, 2015SaveLearn
The Magnetic Structure of Light Nuclei from Lattice QCDLattice QCD with background magnetic fields is used to calculate the magnetic moments and magnetic polarizabilities of the nucleons and of light nuclei with A4, along with the cross-section for…Emmanuel Chang, William Detmold, Kostas Orginos et al.·Jun 17, 2015SaveLearn
Partial-wave and helicity operators for the scattering of two hadrons in lattice QCDPartial-wave operators for lattice QCD are developed in order to facilitate the identification of the spins of two-hadron scattering states corresponding to zero total momentum. Taking the periodic…Stephen J. Wallace·Jun 17, 2015SaveLearn
Non-perturbative improvement of the vector current in Wilson lattice QCDMany observables of interest in lattice QCD are extracted from correlation functions involving the vector current. If Wilson fermions are used, it is therefore of practical importance that, besides…Tim Harris, Harvey B. Meyer·Jun 17, 2015SaveLearn
Renormalisation of gauge theories on general anisotropic lattices and high-energy scattering in QCDWe study the renormalisation of SU(Nc) gauge theories on general anisotropic lattices, to one-loop order in perturbation theory, employing the background field method. The results are then applied…Matteo Giordano·Jun 15, 2015SaveLearn
Neutron Electric Dipole Moment and Tensor Charges from Lattice QCDWe present Lattice QCD results on the neutron tensor charges including, for the first time, a simultaneous extrapolation in the lattice spacing, volume, and light quark masses to the physical point…Tanmoy Bhattacharya, Vincenzo Cirigliano, Rajan Gupta et al.·Jun 12, 2015SaveLearn