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  • The 2 + 2 anisotropic Wilson gluon action with applications 

    PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE (2004)
    A generalization of anisotropic lattices to include a 2+2 discretization is discussed. As a part of this program, we determine the one-loop correction to the gluon self-energy and analyse the restoration of Lorentz ...
  • Analytic smearing of SU(3) link variables in lattice QCD 

    PEARDON, MICHAEL JAMES (American Physical Society, 2004)
    An analytic method of smearing link variables in lattice QCD is proposed and tested. The differentiability of the smearing scheme with respect to the link variables permits the use of modern Monte Carlo updating methods ...
  • Charmonium at high temperature in two-flavor QCD 

    PEARDON, MICHAEL JAMES (American Physical Society, 2007)
    We compute charmonium spectral functions in 2-flavor QCD on anisotropic lattices using the maximum entropy method. Our results suggest that the S-waves (J= and c) survive up to temperatures close to 2Tc, while the P-waves ...
  • 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 from an anisotropic lattice study 

    LIU, LIUMING; VILASECA MAINAR, POL; PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE (2011)
    We present a progress report on our study of the charmonium spectrum in full QCD on anisotropic lattices generated by the Hadron Spectrum Collaboration. We adopt a large basis of interpolating operators to extract the ...
  • 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.
  • First results from 2+1 dynamical quark flavors on an anisotropic lattice: Light-hadron spectroscopy and setting the strange-quark mass 

    PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE (2009)
    We present the first light-hadron spectroscopy on a set of N f ? 2 ? 1 dynamical, anisotropic lattices. A convenient set of coordinates that parameterize the two-dimensional plane of light and strange-quark masses ...
  • 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, 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 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 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 ...