Πλοήγηση ανά Συγγραφέα "Strelchenko, A."

Αποτελέσματα 1-6 από 6

    • Article  

      Determination of Δ-resonance parameters from lattice QCD 

      Petschlies, Marcus; Alexandrou, Constantia; Negele, J. W.; Strelchenko, A.; Tsapalis, Antonios (2013)
      A method suitable for extracting resonance parameters of unstable baryons in lattice QCD is examined. The method is applied to the strong decay of the Δ to a pion-nucleon state, extracting the πNΔ coupling constant and Δ ...
    • Article  

      Evaluation of disconnected quark loops for hadron structure using GPUs 

      Alexandrou, Constantia; Constantinou, Martha; Drach, V.; Hadjiyiannakou, Kyriakos; Jansen, K.; Koutsou, Giannis; Strelchenko, A.; Vaquero, A. (2014)
      A number of stochastic methods developed for the calculation of fermion loops are investigated and compared, in particular with respect to their efficiency when implemented on Graphics Processing Units (GPUs). We assess ...
    • Article  

      Evaluation of fermion loops applied to the calculation of the η ′ mass and the nucleon scalar and electromagnetic form factors 

      Alexandrou, Constantia; Hadjiyiannakou, Kyriakos; Koutsou, Giannis; O Cais, A.; Strelchenko, A. (2012)
      The exact evaluation of the disconnected diagram contributions to the flavor-singlet pseudo-scalar meson mass, the nucleon σ-term and the nucleon electromagnetic form factors is carried out utilizing GPGPU technology with ...
    • Conference Object  

      Implementation of the twisted mass fermion operator in the QUDA library 

      Strelchenko, A.; Alexandrou, Constantia; Koutsou, Giannis; Avilés-Casco, A. V. (Proceedings of Science (PoS), 2013)
      We discuss an extension of the QUDA library for the Wilson twisted mass operator. A performance analysis is presented for both degenerate and non-degenerate flavor doublets. The degenerate twisted mass fermion operator ...
    • Conference Object  

      The quark contents of the nucleon and their implication for dark matter search 

      Alexandrou, Constantia; Constantinou, Martha; Drach, V.; Hadjiyiannakou, Kyriakos; Jansen, K.; Koutsou, Giannis; Strelchenko, A.; Vaquero, A. (Proceedings of Science (PoS), 2013)
      We present results concerning the light and strange quark contents of the nucleon using Nf = 2+1+1 flavours of maximally twisted mass fermions. The corresponding σ- Terms are casting light on the origin of the nucleon mass ...
    • Conference Object  

      A QUDA-branch to compute disconnected diagrams in GPUs 

      Alexandrou, Constantia; Hadjiyiannakou, Kyriakos; Koutsou, Giannis; Strelchenko, A.; Avilés-Casco, A. V. (Proceedings of Science (PoS), 2013)
      Although QUDA allows for an efficient computation of many QCD quantities, it is surprinsingly lacking tools to evaluate disconnected diagrams, for which GPUS are specially well suited. We aim to fill this gap by creating ...