DDalphaAMG for Twisted Mass FermionsWe present the Adaptive Aggregation-based Domain Decomposition Multigrid method extended to the twisted mass fermion discretization action. We show comparisons of results as a function of tuning the…Simone Bacchio, Costantia Alexandrou, Jacob Finkenrath et al.·Nov 3, 2016SaveLearn
Dualization of non-abelian lattice gauge theory with Abelian Color Cycles (ACC)We discuss a new approach to strong coupling expansion and dual representations for non-abelian lattice gauge theories. The Wilson gauge action is decomposed into a sum over "abelian color…Carlotta Marchis, Christof Gattringer·Nov 3, 2016SaveLearn
Phase structure analysis of CP(N-1) model using Tensor renormalization groupThe phase structure of the lattice CP(N-1) model in two dimensions is analyzed by the tensor renormalization group (TRG) method. We focus on the case N=2 and compare the numerical result of the…Hikaru Kawauchi, Shinji Takeda·Nov 3, 2016SaveLearn
Testing the hadro-quarkonium model on the latticeRecently the LHCb experiment found evidence for the existence of two exotic resonances consisting of ccuud quarks. Among the possible interpretations is the hadro-charmonium model, in which…Francesco Knechtli, Maurizio Alberti, Gunnar S. Bali et al.·Nov 3, 2016SaveLearn
MILC staggered conjugate gradient performance on Intel KNLWe review our work done to optimize the staggered conjugate gradient (CG) algorithm in the MILC code for use with the Intel Knights Landing (KNL) architecture. KNL is the second gener- ation Intel…Carleton DeTar, Douglas Doerfler, Steven Gottlieb et al.·Nov 2, 2016SaveLearn
Density Induced Phase Transitions in the Schwinger Model: A Study with Matrix Product StatesWe numerically study the zero temperature phase structure of the multiflavor Schwinger model at nonzero chemical potential. Using matrix product states, we reproduce analytical results for the phase…Mari Carmen Bañuls, Krzysztof Cichy, J. Ignacio Cirac et al.·Nov 2, 2016SaveLearn
Complex Langevin Dynamics in 1+1d QCD at Non-Zero DensitiesWe present our results obtained from gauge cooled complex Langevin simulations in 1+1d QCD at non-zero densities in the strong coupling regime with unrooted staggered fermions. For small quark masses…Sebastian Schmalzbauer, Jacques Bloch·Nov 2, 2016SaveLearn
Discussion of the loop formula for the fermionic determinantA formula expressing the fermionic determinant (a large order polynomial) as an infinite product of smaller determinants is derived and discussed. These smaller determinants are of a fixed size,…Ion-Olimpiu Stamatescu, Erhard Seiler·Nov 2, 2016SaveLearn
Spectroscopy of two dimensional N=2 Super Yang Mills theoryAlbeit the standard model is the most successful model of particles physics, it still has some theoretical shortcomings, for instance the hierarchy problem, the absence of dark matter, etc.…Daniel August, Björn Wellegehausen, Andreas Wipf·Nov 2, 2016SaveLearn
Status report on K with lattice QCD inputsWe report the current status of K, the indirect CP violation parameter in the neutral kaon system, evaluated using the lattice QCD inputs. We use lattice QCD to fix BK, ξ0,…Jon A. Bailey, Weonjong Lee, Jaehoon Leem et al.·Nov 2, 2016SaveLearn
Finite Size Scaling of the Higgs-Yukawa Model near the Gaussian Fixed PointWe study the scaling properties of Higgs-Yukawa models. Using the technique of Finite-Size Scaling, we are able to derive scaling functions that describe the observables of the model in the vicinity…David Y. -J. Chu, Karl Jansen, Bastian Knippschild et al.·Nov 2, 2016SaveLearn
Domain Wall Fermion Simulations with the Exact One-Flavor AlgorithmAs algorithmic developments have driven down the cost of simulating degenerate light quark flavors the relative cost of simulating single quark flavors with the Rational Hybrid Monte Carlo (RHMC)…D. J. Murphy·Nov 1, 2016SaveLearn
Axial-Current Matrix Elements in Light Nuclei from Lattice QCDI present results from the first lattice QCD calculations of axial-current matrix elements in light nuclei, performed by the NPLQCD collaboration. Precision calculations of these matrix elements, and…Martin J. Savage, Phiala E. Shanahan, Brian C. Tiburzi et al.·Nov 1, 2016SaveLearn
A study of the radiative transition ππ πγ* with lattice QCDLattice QCD calculations of radiative transitions between hadrons have in the past been limited to processes of hadrons stable under the strong interaction. Recently developed methods for 12…Luka Leskovec, Constantia Alexandrou, Giannis Koutsou et al.·Nov 1, 2016SaveLearn
Search for a continuum limit of the PMS phasePrevious studies of a simple four-fermion model with staggered fermions in 3D have shown the existence of an exotic quantum critical point, where one may be able to define a continuum limit of the…Venkitesh Ayyar·Nov 1, 2016SaveLearn
Four-Fermion Theories with Exact Chiral Symmetry in Three DimensionsWe investigate a class of four-fermion theories which includes well-known models like the Gross-Neveu model and the Thirring model. In three spacetime dimensions, they are used to model interesting…Daniel Schmidt, Björn Wellegehausen, Andreas Wipf·Nov 1, 2016SaveLearn
A method to compute derivatives of functions of large complex matricesA recently developed numerical method for the calculation of derivatives of functions of general complex matrices, which can also be combined with implicit matrix function approximations such as…M. Puhr, P. V. Buividovich·Nov 1, 2016SaveLearn
Adjoint SU(2) with Four Fermion InteractionsFour fermion interactions appear in many models of Beyond Standard Model physics. In Technicolour and composite Higgs models Standard Model fermion masses can be generated by four fermion terms. They…Jarno Rantaharju, Vincent Drach, Claudio Pica et al.·Oct 31, 2016SaveLearn
Nonperturbative beta function of twelve-flavor SU(3) gauge theoryWe study the discrete beta function of SU(3) gauge theory with Nf=12 massless fermions in the fundamental representation. Using an nHYP-smeared staggered lattice action and an improved gradient flow…Anna Hasenfratz, David Schaich·Oct 31, 2016SaveLearn
Density-of-statesAlthough Monte Carlo calculations using Importance Sampling have matured into the most widely employed method for determining first principle results in QCD, they spectacularly fail for theories with…Kurt Langfeld·Oct 31, 2016SaveLearn
Baryon interactions in lattice QCD: the direct method vs. the HAL QCD potential methodWe make a detailed comparison between the direct method and the HAL QCD potential method for the baryon-baryon interactions, taking the ΞΞ system at mπ= 0.51 GeV in 2+1 flavor QCD and using both…Takumi Iritani, for HAL QCD Collaboration·Oct 31, 2016SaveLearn
Lüscher's finite volume test for two-baryon systems with attractive interactionsFor the attractive interaction, the Lüscher's finite volume formula gives the phase shift at negative squared moment k2<0 for the ground state in the finite volume, which corresponds to the…Sinya Aoki, Takumi Doi, Takumi Iritani·Oct 31, 2016SaveLearn
Hypercubic Effects in semileptonic D π decays on the latticeWe present a lattice determination of the vector and scalar form factors of the semileptonic D π ν decays, which are relevant for the extraction of the CKM matrix element $ Vcd…V. Lubicz, L. Riggio, G. Salerno et al.·Oct 31, 2016SaveLearn
Overcoming strong metastabilities with the LLR methodIn previous work, it has been shown that the recently proposed LLR method is very efficient at overcoming strong metastabilities that arise near first-order phase transition points. Here we present a…Biagio Lucini, William Fall, Kurt Langfeld·Oct 31, 2016SaveLearn
Simulations of N=1 supersymmetric Yang-Mills theory with three coloursWe report on our recent results regarding numerical simulations of the four dimensional, N=1 Supersymmetric Yang-Mills theory with SU(3) gauge symmetry and light dynamical gluinos.Sajid Ali, Georg Bergner, Henning Gerber et al.·Oct 31, 2016SaveLearn