The deconfining phase transition of SO(N) gauge theories in 2+1 dimensionsWe calculate the deconfining temperature of SO(N) gauge theories in 2+1 dimensions, and determine the order of the phase transition as a function of N, for various values of N in the range [4,16]. We…Richard Lau, Michael Teper·Oct 27, 2015SaveLearn
Mass spectra of mesons containing charm quarks - continuum limit results from twisted mass fermionsWe present results from an ongoing computation of masses of D mesons, Ds mesons and charmonium, including both ground states and several parity and angular momentum excitations. We employ 2+1+1…Krzysztof Cichy, Martin Kalinowski, Marc Wagner·Oct 27, 2015SaveLearn
Phase structure of N f=3 QCD at finite temperature and density by Wilson-Clover fermionsWe investigate the phase structure of 3-flavor QCD in the presence of finite quark chemical potential by using Wilson-Clover fermions. To deal with the complex action with finite density, we adopt…Shinji Takeda, Xiao-Yong Jin, Yoshinobu Kuramashi et al.·Oct 27, 2015SaveLearn
Chiral symmetry breaking and monopolesTo understand the relation between the chiral symmetry breaking and monopoles, the chiral condensate which is the order parameter of the chiral symmetry breaking is calculated in the…Adriano Di Giacomo, Masayasu Hasegawa, Fabrizio Pucci·Oct 26, 2015SaveLearn
Five-dimensional Gauge Theories in a warped backgroundThe phase diagram of five-dimensional anisotropic gauge theories in a flat background has been extensively explored during the last decade. Here, we present novel results for the phase structure of…Richard D. Kenway, Eliana Lambrou·Oct 26, 2015SaveLearn
B → π ν at zero recoil from lattice QCD with physical u/d quarksThe exclusive semileptonic decay B → π ν is a key process for the determination of the Cabibbo-Kobayashi-Maskawa matrix element Vub from the comparison of experimental rates as a…B. Colquhoun, R. J. Dowdall, J. Koponen et al.·Oct 26, 2015SaveLearn
Pion Distribution Amplitude from Lattice QCDWe have calculated the second moment of the pion light-cone distribution amplitude using two flavors of dynamical (clover) fermions on lattices of different volumes, lattice spacings between $0.06 \,…V. M. Braun, S. Collins, M. Göckeler et al.·Oct 26, 2015SaveLearn
Violation of chirality of the Möbius domain-wall Dirac operator from the eigenmodesWe investigate the effects of the violation of the Ginsparg-Wilson (GW) relation in the Möbius domain-wall fermion formulation on the lattice with finite fifth dimension. Using a decomposion in terms…JLQCD collaboration, Guido Cossu, Hidenori Fukaya et al.·Oct 26, 2015SaveLearn
Lattice study of the scalar and baryon spectra in many-flavor QCDIn the search for a composite Higgs boson in walking technicolor models, many flavor QCD, in particular with Nf=8, is an attractive candidate, and has been found to have a composite flavor-singlet…Yasumichi Aoki, Tatsumi Aoyama, Ed Bennett et al.·Oct 26, 2015SaveLearn
Finite-temperature phase transition of Nf=3 QCD with exact center symmetryFor the Z3-symmetric lattice QCD-like theory (Z3-QCD), in which SU(3) gauge theory is coupled with three fundamental Wilson quarks with flavor-dependent twisted boundary conditions, we…Tatsuhiro Misumi, Takumi Iritani, Etsuko Itou·Oct 25, 2015SaveLearn
Lattice Calculation of Hadronic Light-by-Light Contribution to the Muon Anomalous Magnetic MomentThe quark-connected part of the hadronic light-by-light scattering contribution to the muon's anomalous magnetic moment is computed using lattice QCD with chiral fermions. We report several…Thomas Blum, Norman Christ, Masashi Hayakawa et al.·Oct 24, 2015SaveLearn
Gauge-invariant field-strength correlators for QCD in a magnetic backgroundWe consider the properties of the gauge-invariant two-point correlation functions of the gauge-field strengths for QCD in the presence of a magnetic background field. We discuss the general structure…Massimo D'Elia, Enrico Meggiolaro, Michele Mesiti et al.·Oct 23, 2015SaveLearn
Overlap fermions on GPUsWe report on our efforts to implement overlap fermions on NVIDIA GPUs using CUDA, commenting on the algorithms used, implemetation details, and the performance of our code.Nigel Cundy, Weonjong Lee·Oct 23, 2015SaveLearn
Curvature of the pseudocritical line in (2+1)-flavor QCD with HISQ fermionsWe study QCD with (2+1)-HISQ fermions at nonzero temperature and nonzero imaginary baryon chemical potential. Monte Carlo simulations are performed using the MILC code along the line of constant…Paolo Cea, Leonardo Cosmai, Alessandro Papa·Oct 23, 2015SaveLearn
Investigation of the scalar spectrum in SU(3) with eight degenerate flavorsThe Lattice Strong Dynamics collaboration is investigating the properties of a SU(3) gauge theory with Nf = 8 light fermions on the lattice. We measure the masses of the lightest pseudoscalar,…Enrico Rinaldi·Oct 22, 2015SaveLearn
Feasibility of Diagrammatic Monte-Carlo based on weak-coupling expansion in asymptotically free theories: case study of O(N) sigma-model in the large-N limitWe discuss the feasibility of applying Diagrammatic Monte-Carlo algorithms to the weak-coupling expansions of asymptotically free quantum field theories, taking the large-N limit of the O(N)…P. V. Buividovich·Oct 22, 2015SaveLearn
Light meson electromagnetic form factors from three-flavor lattice QCD with exact chiral symmetryWe study the chiral behavior of the electromagnetic (EM) form factors of pion and kaon in three-flavor lattice QCD. In order to make a direct comparison of the lattice data with chiral perturbation…JLQCD Collaboration, S. Aoki, G. Cossu et al.·Oct 22, 2015SaveLearn
Exploring Complex-Langevin Methods for Finite-Density QCDQCD at non-zero chemical potential (μ) for quark number has a complex fermion determinant and thus standard simulation methods for lattice QCD cannot be applied. We therefore simulate this theory…D. K. Sinclair, J. B. Kogut·Oct 21, 2015SaveLearn
Ising low-temperature polynomials and hard-sphere gases on cubic lattices of general dimensionWe derive and analyze the low-activity and low-density expansions of the pressure for the model of a hard-sphere gas on cubic lattices of general dimension d, through the 13th order. These…P. Butera, M. Pernici·Oct 21, 2015SaveLearn
Topological insights in many-flavor QCD on the latticeLatKMI Collaboration discusses the topological insights in many-flavor QCD on the lattice. We explore walking/conformal/confining phase in Nf = 4, 8 and 12 (in particular Nf =…Yasumichi Aoki, Tatsumi Aoyama, Ed Bennett et al.·Oct 20, 2015SaveLearn
Neutron electric dipole moment using Nf=2+1+1 twisted mass fermionsWe evaluate the neutron electric dipole moment dN using lattice QCD techniques. The gauge configurations analyzed are produced by the European Twisted Mass Collaboration using…C. Alexandrou, A. Athenodorou, M. Constantinou et al.·Oct 20, 2015SaveLearn
The Yang-Mills gradient flow and SU(3) gauge theory with 12 massless fundamental fermions in a colour-twisted boxWe perform the step-scaling investigation of the running coupling constant, using the gradient-flow scheme, in SU(3) gauge theory with twelve massless fermions in the fundamental representation. The…C. -J. David Lin, Kenji Ogawa, Alberto Ramos·Oct 20, 2015SaveLearn
Witten index and phase diagram of compactified N=1 supersymmetric Yang-Mills theory on the latticeOwing to confinement, the fundamental particles of N=1 Supersymmetric Yang-Mills (SYM) theory, gluons and gluinos, appear only in colourless bound states at zero temperature. Compactifying the…G. Bergner, P. Giudice, G. Münster et al.·Oct 20, 2015SaveLearn
Exploring free-form smearing for bottomonium and B meson spectroscopyFree-form smearing was designed as a way to implement source operators of any desired shape. A variation of the method is introduced that reduces the computational cost by reducing the number of link…Mark Wurtz, Randy Lewis, R. M. Woloshyn·Oct 19, 2015SaveLearn
Large N meson masses from a matrix modelWe explain how to compute meson masses in the large N limit using the twisted Eguchi-Kawai model. A very simple formula is derived, and we show how it leads in a fast and efficient way to results…Antonio González-Arroyo, Masanori Okawa·Oct 19, 2015SaveLearn