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Now showing items 4-23 of 43

  • Charmonium properties in the quark-gluon plasma 

    PEARDON, MICHAEL JAMES (2007)
    We present results for charmonium correlators and spectral functions in 2-flavour QCD on anisotropic lattices. Our results indicate that the S-waves (J/y and hc) survive up to temperatures close to 2Tc, while the P-waves ...
  • Charmonium spectral functions in Nf=2 QCD 

    PEARDON, MICHAEL JAMES; SKULLERUD, JONIVAR (Proceedings of Science, 2005)
    We report on a study of charmonium at high temperature in 2-flavour QCD. This is the first such study with dynamical fermions. Using an improved anisotropic lattice action, spectral functions are extracted from correlators ...
  • Charmonium spectroscopy on dynamical anisotropic lattices 

    PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE; SKULLERUD, JONIVAR (Elsevier, 2006)
    We present a first study of the charmonium spectrum on Nf = 2 dynamical, anisotropic lattices. We take advantage of all-to-all quark propagators to build spatially extended interpolating operators to increase the overlap ...
  • Coarse lattice results for glueballs and hybrids 

    PEARDON, MICHAEL JAMES (Elsevier, 1998)
    A review of new results from lattice simulations of glueballs and heavy-quark hybrid mesons is presented.
  • Dynamical fermion simulations of QCD on anisotropic lattices 

    PEARDON, MICHAEL JAMES (Elsevier, 2004)
    Simulations of QCD with two flavours of improved Wilson quarks on an anisotropic lattice are discussed. Methods for improving the performance of the Hybrid Monte Carlo (HMC) algorithm in these studies are described.
  • Dynamical fermion simulations using Luscher's local bosonic action algorithm 

    PEARDON, MICHAEL JAMES (Elsevier, 1995)
    The two-flavour Schwinger model is used to test the local boson action algorithm of M Luescher. The autocorrelation time is found to rise linearly with the number of auxiliary boson fields. An extension to the algorithm ...
  • Dynamical QCD simulations on anisotropic lattices 

    PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE (2006)
    The simulation of QCD on dynamical ( N f 2 ) anisotropic lattices is described. A method for nonperturbative renormalisation of the parameters in the anisotropic gauge and quark actions is presented. The precision ...
  • Efficient glueball simulations on anisotropic lattices 

    PEARDON, MICHAEL JAMES (American Physical Society, 1997)
    Monte Carlo results for the low-lying glueball spectrum using an improved, anisotropic action are presented. Ten simulations at lattice spacings ranging from 0.2 to 0.4 fm and two different anisotropies have been performed ...
  • Excitations of the torelon 

    PEARDON, MICHAEL JAMES (Elsevier, 2004)
    The excitations of gluonic flux tube in a periodic lattice are examined. Monte Carlo simulations from an anisotropic lattice are presented and the comparison with effective string models is discussed.
  • Excited and exotic charmonium spectroscopy from lattice QCD 

    RYAN, SINEAD MARIE; PEARDON, MICHAEL JAMES (2012)
    We present a spectrum of highly excited charmonium mesons up to around 4.5 GeV calculated using dynamical lattice QCD. Employing novel computational techniques and the variational method with a large basis of carefully ...
  • Excited D and Ds meson spectroscopy from lattice QCD 

    PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE (2012)
  • Excited spectroscopy of charmed mesons from lattice QCD 

    RYAN, SINEAD MARIE; PEARDON, MICHAEL JAMES (2013)
    We present spectra of highly excited D and D s mesons up to around 3.8 GeV determined using dynamical lattice QCD. We employ novel computational techniques and the variational method with a large basis of carefully constructed ...
  • Gauge theories on a 2+2 anisotropic lattice 

    PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE (American Physical Society, 2003)
    The implementation of gauge theories on a four-dimensional anisotropic lattice with two distinct lattice spacings is discussed, with special attention to the case where two axes are finely and two axes are coarsely discretized. ...
  • Glueball matrix elements on anisotropic lattices 

    PEARDON, MICHAEL JAMES (Elsevier, 1998)
    We describe a lattice calculation of the matrix elements relevant for glueball production in J/ radiative decays. The techniques for such a calculation on anisotropic lattices with an improved action are outlined. We ...
  • Glueball matrix elements on anisotropic lattices 

    PEARDON, MICHAEL JAMES (Elsevier, 2004)
    The glueball-to-vacuum matrix elements of local gluonic operators in scalar, tensor, and pseudoscalar channels are investigated numerically on several anisotropic lattices with the spatial lattice spacing in the range ...
  • Glueball spectrum and matrix elements on anisotropic lattices 

    PEARDON, MICHAEL JAMES (American Physical Society, 2006)
    The glueball-to-vacuum matrix elements of local gluonic operators in scalar, tensor, and pseudoscalar channels are investigated numerically on several anisotropic lattices with the spatial lattice spacing ranging from ...
  • Glueball spectrum from an anisotropic lattice study 

    PEARDON, MICHAEL JAMES (American Physical Society, 1999)
    The spectrum of glueballs below 4 GeV in the SU~3! pure-gauge theory is investigated using Monte Carlo simulations of gluons on several anisotropic lattices with spatial grid separations ranging from 0.1 to 0.4 fm. Systematic ...
  • The glueball spectrum from novel improved actions 

    PEARDON, MICHAEL JAMES (Elsevier, 2000)
    Results for the inter-quark potential and low-lying SU(3) glueball spectrum from simulations using a new improved action are presented. The action, suitable for highly anisotropic lattices, contains a two-plaquette ...
  • Heavy hadrons on an anisotropic lattice 

    PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE (Elsevier, 2004)
    Results from simulations of quarkonia and heavy-light mesons on an anisotropic lattice are presented. The improved quark action and action-parameter tuning used in this study are discussed.