The hadronic vacuum polarization contribution to aμ from full lattice QCDWe determine the contribution to the anomalous magnetic moment of the muon from the α2QED hadronic vacuum polarization diagram using full lattice QCD and including u/d quarks with…Bipasha Chakraborty, C. T. H. Davies, P. G. de Oliviera et al.·Jan 12, 2016SaveLearn
The density of states approach at finite chemical potential: a numerical study of the Bose gasRecently, a novel algorithm for computing the density of states in statistical systems and quantum field theories has been proposed. The same method can be applied to theories at finite density…L. Bongiovanni, K. Langfeld, B. Lucini et al.·Jan 12, 2016SaveLearn
Lattice QCD: bulk and transport properties of QCD matterWe present an overview of the most recent results on bulk and transport properties of QCD matter inferred from lattice QCD simulations.Claudia Ratti·Jan 11, 2016SaveLearn
Walking and conformal dynamics in many-flavor QCDIn the search for a realistic walking technicolor model, QCD with many flavors is an attractive candidate. From the series of studies by the LatKMI collaboration, we present updated results of the…Yasumichi Aoki, Tatsumi Aoyama, Ed Bennett et al.·Jan 11, 2016SaveLearn
Neutron Electric Dipole Moment from quark Chromoelectric Dipole MomentThe connection between a regularization-independent symmetric momentum substraction (RI- SMOM) and the MS scheme for the quark chromo EDM operators is discussed. A…Tanmoy Bhattacharya, Vincenzo Cirigliano, Rajan Gupta et al.·Jan 10, 2016SaveLearn
Nucleon Charges, Form-factors and Neutron EDMWe present an update of our analysis of statistical and systematic errors in the calculation of iso-vector scalar, axial and tensor charges of the nucleon. The calculations are done using Nf=2+1+1…Rajan Gupta, Tanmoy Bhattacharya, Vincenzo Cirigliano et al.·Jan 8, 2016SaveLearn
Direct Evaluation of the Quark Content of Nucleons from Lattice QCD at the Physical PointWe evaluate the light, strange and charm scalar content of the nucleon using one lattice QCD ensemble generated with two degenerate light quarks with mass fixed to their physical value. We use…A. Abdel-Rehim, C. Alexandrou, M. Constantinou et al.·Jan 7, 2016SaveLearn
The gradient flow in λϕ4 theoryA gradient flow equation for λϕ4 theory in D=4 is formulated. In this scheme the gradient flow equation is written in terms of the renormalized probe variable Φ(t,x) and renormalized…Kazuo Fujikawa·Jan 7, 2016SaveLearn
Perturbative renormalization of the electric field correlatorThe momentum diffusion coefficient of a heavy quark in a hot QCD plasma can be extracted as a transport coefficient related to the correlator of two colour-electric fields dressing a Polyakov loop.…C. Christensen, M. Laine·Jan 7, 2016SaveLearn
Gluon Dynamics, Center Symmetry and the deconfinement phase transition in SU(3) pure Yang-Mills theoryThe correlations between the modulus of the Polyakov loop, its phase θ and the Landau gauge gluon propagator at finite temperature are investigated in connection with the center symmetry for pure…P. J. Silva, O. Oliveira·Jan 7, 2016SaveLearn
Quantum Finite Elements for Lattice Field TheoryViable non-perturbative methods for lattice quantum field theories on curved manifolds are difficult. By adapting features from the traditional finite element methods (FEM) and Regge Calculus, a new…Richard C. Brower, George Fleming, Andrew Gasbarro et al.·Jan 7, 2016SaveLearn
Mean distribution approach to spin and gauge theoriesWe formulate self-consistency equations for the distribution of links in spin models and of plaquettes in gauge theories. This improves upon known mean-field, mean-link, and mean-plaquette…Oscar Akerlund, Philippe de Forcrand·Jan 6, 2016SaveLearn
Stochastic calculation of the QCD Dirac operator spectrum with Mobius domain-wall fermionWe calculate the spectral function of the QCD Dirac operator using the four-dimensional effective operator constructed from the Mobius domain-wall implementation. We utilize the eigenvalue filtering…G. Cossu, H. Fukaya, S. Hashimoto et al.·Jan 5, 2016SaveLearn
Matching effective chiral Lagrangians with dimensional and lattice regularizationWe compute the free energy in the presence of a chemical potential coupled to a conserved charge in effective O(n) scalar field theory (without explicit symmetry breaking terms) to NNL order for…Ferenc Niedermayer, Peter Weisz·Jan 4, 2016SaveLearn
The strange contribution to aμ with physical quark masses using Möbius domain wall fermionsWe present preliminary results for the strange leading-order hadronic contribution to the anomalous magnetic moment of the muon using RBC/UKQCD physical point domain wall fermions ensembles. We…Matt Spraggs, Peter Boyle, Luigi Del Debbio et al.·Jan 4, 2016SaveLearn
Anomalous dimensions on the latticeWe review methods and results for extracting the anomalous dimensions of operators from lattice field theory calculations. The most important application is the anomalous mass dimension in conformal…Joel Giedt·Dec 31, 2015SaveLearn
Chiral symmetry restoration in static-light mesons: chiral restoration theorem, the quark running mass m(k) and first chiral restoration signals in the lattice QCD spectraChiral symmetry restoration high in the hadron spectra is expected but it remains to be confirmed both in lattice QCD computations and in experiments. Recently, a theorem was derived, relating chiral…P. Bicudo·Dec 31, 2015SaveLearn
Complex spectrum of finite-density lattice QCD with static quarks at strong couplingWe calculate the spectrum of transfer matrix eigenvalues associated with Polyakov loops in finite-density lattice QCD with static quarks. These eigenvalues determine the spatial behavior of Polyakov…Hiromichi Nishimura, Michael C. Ogilvie, Kamal Pangeni·Dec 30, 2015SaveLearn
Calculation of the hadronic vacuum polarization disconnected contribution to the muon anomalous magnetic momentWe report the first lattice QCD calculation of the hadronic vacuum polarization disconnected contribution to the muon anomalous magnetic moment at physical pion mass. The calculation uses a refined…T. Blum, P. A. Boyle, T. Izubuchi et al.·Dec 30, 2015SaveLearn
Photon mass term as an IR regularization for QCD+QED on the latticeInclusion of QED in lattice QCD calculations can lead to power-law volume artifacts as a consequence of the long-range nature of the interaction. Such artifacts must be removed by extrapolation in…Michael G. Endres, Andrea Shindler, Brian C. Tiburzi et al.·Dec 30, 2015SaveLearn
Sign problem and Monte Carlo calculations beyond Lefschetz thimblesWe point out that Monte Carlo simulations of theories with severe sign problems can be profitably performed over manifolds in complex space different from the one with fixed imaginary part of the…Andrei Alexandru, Gokce Basar, Paulo F. Bedaque et al.·Dec 29, 2015SaveLearn
ρ and K* resonances on the lattice at nearly physical quark masses and Nf=2Working with a pion mass mπ≈ 150 MeV, we study ππ and Kπ scattering using two flavours of non-perturbatively improved Wilson fermions at a lattice spacing a≈ 0.071 fm. Employing…Gunnar S. Bali, Sara Collins, Antonio Cox et al.·Dec 29, 2015SaveLearn
Decay constants and spectroscopy of mesons in lattice QCD using domain-wall fermionsWe report results of masses and decay constants of light and charmed pseudo-scalar mesons using lattice QCD with Möbius domain-wall fermions. Using this formulation we are able to compute…B. Fahy, G. Cossu, S. Hashimoto et al.·Dec 29, 2015SaveLearn
Preweighting method in Monte-Carlo sampling with complex action --- Strong-Coupling Lattice QCD with 1/g2 corrections, as an example ---We investigate the QCD phase diagram in the strong-coupling lattice QCD with fluctuation and 1/g2 effects by using the auxiliary field Monte-Carlo simulations. The complex phase of the Fermion…Akira Ohnishi, Terukazu Ichihara·Dec 28, 2015SaveLearn
Many flavor approach to study the critical point in finite density QCDWe discuss the QCD critical point at finite density through the study of many flavor QCD, in which two light flavors and Nf massive flavors exist. Performing simulations of QCD with two flavors of…Ryo Iwami, Shinji Ejiri, Norikazu Yamada·Dec 28, 2015SaveLearn