Investigating the topological structure of quenched lattice QCD with overlap fermions by using multi-probing approximationThe topological charge density and topological susceptibility are determined by multi-probing approximation using overlap fermions in quenched SU(3) gauge theory. Then we investigate the topological…You-Hao Zou, Jian-Bo Zhang, Guang-Yi Xiong et al.·Mar 23, 2017SaveLearn
Approximate dual representation for Yang-Mills SU(2) gauge theoryAn approximate dual representation for non-Abelian lattice gauge theories in terms of a new set of dynamical variables, the plaquette occupation numbers (PONs) that are natural numbers, is discussed.…R. Leme, O. Oliveira, G. Krein·Mar 21, 2017SaveLearn
Are two nucleons bound in lattice QCD for heavy quark masses? -- Consistency check with Lüscher's finite volume formula --On the basis of the Lüscher's finite volume formula, a simple test (consistency check or sanity check) is introduced and applied to inspect the recent claims of the existence of the…Takumi Iritani, Sinya Aoki, Takumi Doi et al.·Mar 21, 2017SaveLearn
Up, down, and strange nucleon axial form factors from lattice QCDWe report a calculation of the nucleon axial form factors GAq(Q2) and GPq(Q2) for all three light quark flavors q∈\u,d,s\ in the range 0≤ Q2 1.2 GeV2 using…Jeremy Green, Nesreen Hasan, Stefan Meinel et al.·Mar 20, 2017SaveLearn
QCD thermodynamics in the crossover/freeze-out regionWe use results from a 6-th order Taylor expansion of the QCD equation of state to construct expansions for cumulants of conserved charge fluctuations and their correlations. We show that these…Frithjof Karsch·Mar 20, 2017SaveLearn
Lattice calculation of coordinate-space vector and axial-vector current correlators in QCDWe study the vector and axial-vector current correlators in perturbative and non-perturbative regimes of QCD. The correlators in Euclidean coordinate space are calculated on the lattice using the…JLQCD collaboration, M. Tomii, G. Cossu et al.·Mar 18, 2017SaveLearn
Precise determination of the three-quark potential in SU(3) lattice gauge theoryWe investigate the static interquark potential for the three-quark system in SU(3) lattice gauge theory at zero temperature by using Monte Carlo simulations. We extract the potential from the…Yoshiaki Koma, Miho Koma·Mar 18, 2017SaveLearn
Theoretical and Computational Aspects of New Lattice Fermion FormulationsIn this work we investigate theoretical and computational aspects of novel lattice fermion formulations for the simulation of lattice gauge theories. The lattice approach to quantum gauge theories is…Christian Zielinski·Mar 18, 2017SaveLearn
The role of the Euclidean signature in lattice calculations of quasi-distributions and other non-local matrix elementsLattice quantum chromodynamics (QCD) provides the only known systematic, nonperturbative method for first-principles calculations of nucleon structure. However, for quantities such as lightfront…Raúl A. Briceño, Maxwell T. Hansen, Christopher J. Monahan·Mar 17, 2017SaveLearn
A simple model for a scalar two-point correlator in the presence of a resonanceWe present a simple toy model for a scalar-isoscalar two-point correlator, which can serve as a testing ground for the extraction of resonance parameters from Lattice QCD calculations. We discuss in…Peter C. Bruns·Mar 17, 2017SaveLearn
Nonperturbative comparison of clover and HISQ quarks in lattice QCD and the properties of the phi mesonWe compare correlators for pseudoscalar and vector mesons made from valence strange quarks using the clover quark and highly improved staggered quark (HISQ) formalisms in full lattice QCD. We use…Bipasha Chakraborty, C. T. H. Davies, G. C. Donald et al.·Mar 16, 2017SaveLearn
A Worm Algorithm for the Lattice CP(N-1) ModelThe CP(N-1) model in 2D is an interesting toy model for 4D QCD as it possesses confinement, asymptotic freedom and a non-trivial vacuum structure. Due to the lower dimensionality and the absence of…Tobias Rindlisbacher, Philippe de Forcrand·Mar 15, 2017SaveLearn
4D N=1 SYM supercurrent in terms of the gradient flowThe gradient flow and its small flow-time expansion provide a very versatile method to represent renormalized composite operators in a regularization-independent manner. This technique has been…Kenji Hieda, Aya Kasai, Hiroki Makino et al.·Mar 14, 2017SaveLearn
Hadron-Hadron Interactions from Nf=2+1+1 Lattice QCD: isospin-1 KK scattering lengthWe present results for the interaction of two kaons at maximal isospin. The calculation is based on Nf=2+1+1 flavour gauge configurations generated by the European Twisted Mass Collaboration with…Christopher Helmes, Christian Jost, Bastian Knippschild et al.·Mar 14, 2017SaveLearn
Controlling the Sign Problem in Finite Density Quantum Field TheoryQuantum field theories at finite matter densities generically possess a partition function that is exponentially suppressed with the volume compared to that of the phase quenched analogue. The…Nicolas Garron, Kurt Langfeld·Mar 14, 2017SaveLearn
Investigation of New Methods for Numerical Stochastic Perturbation Theory in φ4 TheoryNumerical stochastic perturbation theory is a powerful tool for estimating high-order perturbative expansions in lattice field theory. The standard algorithms based on the Langevin equation, however,…Mattia Dalla Brida, Marco Garofalo, A. D. Kennedy·Mar 13, 2017SaveLearn
SMD-based numerical stochastic perturbation theoryThe viability of a variant of numerical stochastic perturbation theory, where the Langevin equation is replaced by the SMD algorithm, is examined. In particular, the convergence of the process to a…Mattia Dalla Brida, Martin Lüscher·Mar 13, 2017SaveLearn
Density of States FFA analysis of SU(3) lattice gauge theory at a finite density of color sourcesWe present a Density of States calculation with the Functional Fit Approach (DoS FFA) in SU(3) lattice gauge theory with a finite density of static color sources. The DoS FFA uses a parameterized…Mario Giuliani, Christof Gattringer·Mar 10, 2017SaveLearn
Non-perturbative renormalization of flavor singlet quark bilinear operators in lattice QCDWe report on our studies of the renormalization of flavor singlet quark bilinear operators in lattice QCD. The renormalization constants are determined non-perturbatively using gauge field ensembles…G. S. Bali, S. Collins, M. Göckeler et al.·Mar 10, 2017SaveLearn
A Python program for the implementation of the Γ-method for Monte Carlo simulationsWe present a modular analysis program written in Python devoted to the estimation of autocorrelation times for Monte Carlo simulations by means of the Γ-method algorithm. We give a brief review of…Barbara De Palma, Marco Erba, Luca Mantovani et al.·Mar 8, 2017SaveLearn
Joint Contour Net analysis of lattice QCD dataLattice Quantum Chromodynamics (QCD) is an approach used by theoretical physicists to model the strong nuclear force. This works at the sub-nuclear scale to bind quarks together into hadrons…Dean P. Thomas, Rita Borgo, Hamish Carr et al.·Mar 7, 2017SaveLearn
Tempered transitions between thimblesQuantum field theories with complex actions cannot be investigated using importance sampling due to the sign problem. One possible solution is to use the holomorphic gradient flow, a method we…Andrei Alexandru, Gokce Basar, Paulo F. Bedaque et al.·Mar 7, 2017SaveLearn
Nonperturbative Casimir effect and monopoles: compact Abelian gauge theory in two spatial dimensionsWe demonstrate that Casimir forces associated with zero-point fluctuations of quantum vacuum may be substantially affected by the presence of dynamical topological defects. In order to illustrate…M. N. Chernodub, V. A. Goy, A. V. Molochkov·Mar 6, 2017SaveLearn
Inclusive semi-leptonic B meson decay structure functions from lattice QCDWe propose a method to non-perturbatively calculate the forward-scattering matrix elements relevant to inclusive semi-leptonic B meson decays. Corresponding hadronic structure functions at unphysical…Shoji Hashimoto·Mar 6, 2017SaveLearn
Nucleon structure functions from lattice operator product expansionDeep-inelastic scattering, in the laboratory and on the lattice, is most instructive for understanding how the nucleon is built from quarks and gluons. The long-term goal is to compute the associated…A. J. Chambers, R. Horsley, Y. Nakamura et al.·Mar 3, 2017SaveLearn