Non-Local effective SU(2) Polyakov-loop models from inverse Monte-Carlo methodsThe strong-coupling expansion of the lattice gauge action leads to Polyakov-loop models that effectively describe gluodynamics at low temperatures, and together with the hopping expansion of the…Bardiya Bahrampour, Björn Wellegehausen, Lorenz von Smekal·Dec 1, 2016SaveLearn
Review on Hadron SpectroscopyI review some of the lattice results on spectroscopy and resonances in the past years. For the conventional hadron spectrum computations, focus has been put on the isospin breaking effects, QED…Chuan Liu·Dec 1, 2016SaveLearn
Resolving-Power QuantizationStarting with a general discussion, a program is sketched for a quantization based on dilations. This resolving-power quantization is simplest for scalar field theories. The hope is to find a way to…Herbert Neuberger·Nov 30, 2016SaveLearn
On the condition for correct convergence in the complex Langevin methodThe complex Langevin method (CLM) provides a promising way to perform the path integral with a complex action using a stochastic equation for complexified dynamical variables. It is known, however,…Shinji Shimasaki, Keitaro Nagata, Jun Nishimura·Nov 30, 2016SaveLearn
Λc Λ+ ν form factors and decay rates from lattice QCD with physical quark massesThe first lattice QCD calculation of the form factors governing Λc Λ+ ν decays is reported. The calculation was performed with two different lattice spacings and includes one…Stefan Meinel·Nov 29, 2016SaveLearn
B(s) D(s) semileptonic decays with NRQCD-HISQ valence quarksWe present a calculation of the form factors, f0 and f+, for the B(s) D(s) semileptonic decays. Our work uses the MILC nf=2+1 AsqTad configurations with NRQCD and HISQ valence…Christopher J. Monahan, Heechang Na, Chris M. Bouchard et al.·Nov 29, 2016SaveLearn
Study of lattice QCD at finite chemical potential using canonical ensemble approachNew approach to computation of canonical partition functions in Nf=2 lattice QCD is presented. We compare results obtained by new method with results obtained by known method of hopping parameter…V. G. Bornyakov, D. L. Boyda, V. A. Goy et al.·Nov 29, 2016SaveLearn
Non-perturbative running of quark masses in three-flavour QCDWe present our preliminary results for the computation of the non-perturbative running of renormalized quark masses in Nf = 3 QCD, between the electroweak and hadronic scales, using standard…Isabel Campos, Patrick Fritzsch, Carlos Pena et al.·Nov 29, 2016SaveLearn
Static and non-static vector screening massesThermal screening masses of the conserved vector current are calculated both in a weak-coupling approach and in lattice QCD. The inverse of a screening mass can be understood as the length scale over…Bastian B. Brandt, Anthony Francis, Harvey B. Meyer et al.·Nov 29, 2016SaveLearn
Kaon-kaon scattering at maximal isospin from Nf=2+1+1 twisted mass lattice QCDWe present results for the interaction of two kaons at maximal isospin. The calculation is based on 2+1+1 flavour gauge configurations generated by the ETM Collaboration (ETMC) featuring pion masses…Christopher Helmes, Christian Jost, Bastian Knippschild et al.·Nov 29, 2016SaveLearn
Rho meson decay width in SU(2) gauge theories with 2 fundamental flavoursSU(2) gauge theories with two quark flavours in the fundamental representation are among the most promising theories of composite dynamics describing the electroweak sector. Three out of five…Tadeusz Janowski, Vincent Drach, Claudio Pica·Nov 28, 2016SaveLearn
Nucleon spin and quark content at the physical pointWe present results on the spin and quark content of the nucleon using Nf=2 twisted mass clover-improved fermion simulations with a pion mass close to its physical value. We use recently developed…C. Alexandrou, M. Constantinou, K. Hadjiyiannakou et al.·Nov 28, 2016SaveLearn
Quark Mass Dependence of the QCD Critical End Point in the Strong Coupling LimitStrong coupling lattice QCD in the dual representation allows to study the full μ-T phase diagram, due to the mildness of the finite density sign problem. Such simulations have been performed in…Jangho Kim, Wolfgang Unger·Nov 28, 2016SaveLearn
Bayesian priors and nuisance parametersBayesian techniques are widely used to obtain spectral functions from correlators. We suggest a technique to rid the results of nuisance parameters, ie, parameters which are needed for the…Sourendu Gupta, Anirban Lahiri·Nov 26, 2016SaveLearn
Tensor RG calculations and quantum simulations near criticalityWe discuss the reformulation of the O(2) model with a chemical potential and the Abelian Higgs model on a 1+1 dimensional space-time lattice using the Tensor Renormalization Group (TRG) method. The…Y. Meurice, A. Bazavov, Shan-Wen Tsai et al.·Nov 26, 2016SaveLearn
The connected and leading disconnected diagrams of the hadronic light-by-light contribution to muon g - 2We report our recent lattice calculation of hadronic light-by-light contribution to muon g-2 using our recently developed moment method. The connected diagrams and the leading disconnected diagrams…Luchang Jin, Thomas Blum, Norman Christ et al.·Nov 26, 2016SaveLearn
Applying recursive numerical integration techniques for solving high dimensional integralsThe error scaling for Markov-Chain Monte Carlo techniques (MCMC) with N samples behaves like 1/N. This scaling makes it often very time intensive to reduce the error of computed…Andreas Ammon, Alan Genz, Tobias Hartung et al.·Nov 25, 2016SaveLearn
Finite-Volume QED Corrections to Decay Amplitudes in Lattice QCDWe demonstrate that the leading and next-to-leading finite-volume effects in the evaluation of leptonic decay widths of pseudoscalar mesons at O(α) are universal, i.e. they are independent of the…V. Lubicz, G. Martinelli, C. T. Sachrajda et al.·Nov 25, 2016SaveLearn
QCD with Flavored Minimally Doubled FermionsI discuss minimally doubled fermions fermions as an ultra-local formulation on the lattice for sea quarks that realize a non-singlet chiral symmetry. I introduce a non-singlet mass term for…Johannes Heinrich Weber·Nov 25, 2016SaveLearn
Study of lattice QCD at finite baryon density using the canonical approachAt finite baryon density lattice QCD first-principle calculations can not be performed due to the sign problem. In order to circumvent this problem, we use the canonical approach, which provides…V. G. Bornyakov, D. L. Boyda, V. A. Goy et al.·Nov 25, 2016SaveLearn
Higher order quark number fluctuations via imaginary chemical potentials in Nf=2+1 QCDWe discuss analytic continuation as a tool to extract the cumulants of the quark number fluctuations in the strongly interacting medium from lattice QCD simulations at imaginary chemical potentials.…Massimo D'Elia, Giuseppe Gagliardi, Francesco Sanfilippo·Nov 24, 2016SaveLearn
Sign problem in finite density lattice QCDThe canonical approach, which was developed for solving the sign problem, may suffer from a new type of sign problem. In the canonical approach, the grand partition function is written as a fugacity…V. A. Goy, V. Bornyakov, D. Boyda et al.·Nov 24, 2016SaveLearn
Simulating thimble regularization of lattice quantum field theoriesMonte Carlo simulations of lattice quantum field theories on Lefschetz thimbles are non trivial. We discuss a new Monte Carlo algorithm based on the idea of computing contributions to the functional…Francesco Di Renzo, Giovanni Eruzzi·Nov 24, 2016SaveLearn
Gauge cooling for the singular-drift problem in the complex Langevin method --- an application to finite density QCDWe study full QCD at finite density and low temperature with light quark mass using the complex Langevin method. Since the singular drift problem turns out to be mild on a 43 × 8 lattice we…Keitaro Nagata, Hideo Matsufuru, Jun Nishimura et al.·Nov 24, 2016SaveLearn
Deflation as a Method of Variance Reduction for Estimating the Trace of a Matrix InverseMany fields require computing the trace of the inverse of a large, sparse matrix. The typical method used for such computations is the Hutchinson method which is a Monte Carlo (MC) averaging over…Arjun Singh Gambhir, Andreas Stathopoulos, Kostas Orginos·Nov 24, 2016SaveLearn