Scattering in a Euclidean formulation of relativistic quantum mechanicsA Euclidean formulation of relativistic quantum mechanics is discussed. Representations of the Hilbert space inner product and Poincaré generators are all expressed in terms of Euclidean space-time…W. N. Polyzou, Gordon Aiello, Philip Kopp·Sep 7, 2018SaveLearn
Abelian color cycle and abelian color flux dualization methods for non-abelian lattice field theoriesIn this thesis we present the application of the abelian color cycle (ACC) and the abelian color flux (ACF) methods to several models: the SU(2) principal chiral model, the SU(2)…Carlotta Marchis·Sep 7, 2018SaveLearn
Low temperature condensation and scattering dataWe study ϕ4 lattice field theory at finite chemical potential μ in two and four dimensions, using a worldline representation that overcomes the complex action problem. We compute the particle…Oliver Orasch, Christof Gattringer, Mario Giuliani·Sep 7, 2018SaveLearn
Automatic differentiation for error analysis of Monte Carlo dataAutomatic Differentiation (AD) allows to determine exactly the Taylor series of any function truncated at any order. Here we propose to use AD techniques for Monte Carlo data analysis. We discuss how…Alberto Ramos·Sep 5, 2018SaveLearn
The properties of D1-branes from lattice super Yang--Mills theory using gauge/gravity dualityThe two-dimensional supersymmetric Yang-Mills (SYM) theory with sixteen supercharges at large N and strong 't~Hooft coupling is conjectured to be dual to certain supergravity solutions in the…Raghav Govind Jha·Sep 4, 2018SaveLearn
Neutron-antineutron oscillations from lattice QCDFundamental symmetry tests of baryon number violation in low-energy experiments can probe beyond the Standard Model (BSM) explanations of the matter-antimatter asymmetry of the universe.…Enrico Rinaldi, Sergey Syritsyn, Michael L. Wagman et al.·Sep 1, 2018SaveLearn
Meson correlation functions at high temperature QCD: SU(2)CS symmetry vs. free quarksWe report on the progress of understanding spatial correlation functions in high temperature QCD. We study isovector meson operators in Nf=2 QCD using domain-wall fermions on lattices of Ns=32…C. Rohrhofer, Y. Aoki, G. Cossu et al.·Sep 1, 2018SaveLearn
Large Nc Thermodynamics with Dynamical FermionsWe present a progress report on our investigation of the thermodynamics of QCD with Nf=2 flavors of dynamical Wilson fermions in the limit of a large number of colors Nc. To date, studies of…Thomas DeGrand, Daniel C. Hackett, Ethan T. Neil·Aug 31, 2018SaveLearn
The two-loop energy-momentum tensor within the gradient-flow formalismThe gradient-flow formulation of the energy-momentum tensor of QCD is extended to NNLO perturbation theory. This means that the Wilson coefficients which multiply the flowed operators in the…Robert V. Harlander, Yannick Kluth, Fabian Lange·Aug 29, 2018SaveLearn
Fermions at Finite Density in (2+1)d with Sign-Optimized ManifoldsWe present Monte Carlo calculations of the thermodynamics of the (2+1) dimensional Thirring model at finite density. We bypass the sign problem by deforming the domain of integration of the path…Andrei Alexandru, Paulo F. Bedaque, Henry Lamm et al.·Aug 29, 2018SaveLearn
Updated evaluation of K in the Standard Model with lattice QCD inputsWe report a strong tension in K at the 4σ level between the experimental value and the theoretical value calculated directly from the standard model using lattice QCD inputs such as…Jon A. Bailey, Sunkyu Lee, Weonjong Lee et al.·Aug 29, 2018SaveLearn
High precision renormalization of the flavour non-singlet Noether currents in lattice QCD with Wilson quarksWe determine the non-perturbatively renormalized axial current for O(a) improved lattice QCD with Wilson quarks. Our strategy is based on the chirally rotated Schrödinger functional and can be…Mattia Dalla Brida, Tomasz Korzec, Stefan Sint et al.·Aug 28, 2018SaveLearn
Colour field densities of the quark-antiquark excited flux tubes in SU(3) lattice QCDWe combine techniques previously utilised to study flux tube field density profiles and to study the excited spectrum of the gluonic fields produced by a static quark-antiquark pair. Working with…P. Bicudo, N. Cardoso, M. Cardoso·Aug 27, 2018SaveLearn
Quarkonium in-medium properties from realistic lattice NRQCDWe present the final results of our high statistics study on the properties of bottomonium and charmonium at finite temperature. We focus on the temperature range around the crossover transition…Seyong Kim, Peter Petreczky, Alexander Rothkopf·Aug 27, 2018SaveLearn
Proton Mass Decomposition from the QCD Energy Momentum TensorWe report results on the proton mass decomposition and also on related quark and glue momentum fractions. The results are based on overlap valence fermions on four ensembles of Nf = 2+1 DWF…Yi-Bo Yang, Jian Liang, Yu-Jiang Bi et al.·Aug 27, 2018SaveLearn
Nucleon-pion-state contamination in lattice calculations of the axial form factors of the nucleonThe nucleon-pion-state contribution to QCD two- and three-point functions used in the calculation of the axial form factors of the nucleon are studied in chiral perturbation theory. For physically…Oliver Bar·Aug 27, 2018SaveLearn
Form factor ratios for Bs → K \, \, ν and Bs → Ds \, \, ν semileptonic decays and |Vub/Vcb|We present a lattice quantum chromodynamics determination of the ratio of the scalar and vector form factors for two semileptonic decays of the Bs meson: Bs → K ν and $Bs…Christopher J. Monahan, Chris M. Bouchard, G. Peter Lepage et al.·Aug 24, 2018SaveLearn
Topological Susceptibility of the 2d O(3) Model under Gradient FlowThe 2d O(3) model is widely used as a toy model for ferromagnetism and for Quantum Chromodynamics. With the latter it shares --- among other basic aspects --- the property that the continuum…Wolfgang Bietenholz, Philippe de Forcrand, Urs Gerber et al.·Aug 24, 2018SaveLearn
Three-dimensional finite temperature Z2 gauge theory with tensor network schemeWe apply a tensor network scheme to finite temperature Z2 gauge theory in 2+1 dimensions. Finite size scaling analysis with the spatial extension up to Nσ=4096 at the temporal extension of…Yoshinobu Kuramashi, Yusuke Yoshimura·Aug 24, 2018SaveLearn
Finite density 2d O(3) sigma model: dualization and numerical simulationsThe action of the 2d O(3) non-linear sigma model on the lattice in a bath of particles, when expressed in terms of standard O(3) degrees of freedom, is complex. A reformulation of the model in terms…B. Alles, O. Borisenko, Alessandro Papa·Aug 23, 2018SaveLearn
Flavor diagonal tensor charges of the nucleon from 2+1+1 flavor lattice QCDWe present state-of-the-art results for the matrix elements of flavor diagonal tensor operators within the nucleon state. The calculation of the dominant connected contribution is done using eleven…Rajan Gupta, Boram Yoon, Tanmoy Bhattacharya et al.·Aug 23, 2018SaveLearn
Gradient flow representation of the four-dimensional N=2 super Yang--Mills supercurrentIn K.~Hieda, A.~Kasai, H.~Makino, and H.~Suzuki, Prog.\ Theor.\ Exp.\ Phys.\ 2017, 063B03 (2017), a properly normalized supercurrent in the four-dimensional (4D) N=1 super…Aya Kasai, Okuto Morikawa, Hiroshi Suzuki·Aug 22, 2018SaveLearn
Multiple-particle interaction in 1+1 dimensional lattice modelFinite volume multiple-particle interaction is studied in a two-dimensional complex ϕ4 lattice model. The existence of analytical solutions to the ϕ4 model in two-dimensional space and time…Peng Guo, Tyler Morris·Aug 22, 2018SaveLearn
QCD phase diagram in a magnetic background for different values of the pion massWe investigate the behavior of the pseudo-critical temperature of Nf = 2+1 QCD as a function of a static magnetic background field for different values of the pion mass, going up to $mπ…Massimo D'Elia, Floriano Manigrasso, Francesco Negro et al.·Aug 21, 2018SaveLearn
Lattice study of static quark-antiquark interactions in dense quark matterIn this paper we study the interactions among a static quark-antiquark pair in the presence of dense two-color quark matter with lattice simulation. To this end we compute Polyakov line correlation…N. Yu. Astrakhantsev, V. G. Bornyakov, V. V. Braguta et al.·Aug 20, 2018SaveLearn