Browsing Pure & Applied Mathematics (Scholarly Publications) by Author "Peardon, Michael"
Now showing items 1-7 of 7
-
An Anisotropic preconditioning for the Wilson fermion matrix on the lattice
Peardon, Michael (2010)A preconditioning for the Wilson fermion matrix on the lattice is defined, which is particularly suited to the case when the temporal lattice spacing is much smaller than the spatial one. Details on the implementation of ... -
The excited hadron spectrum in lattice QCD using a new variance reduction method
Peardon, Michael (2010)Progress in calculating the spectrum of excited baryons and mesons in lattice QCD is described. Correlation matrices of sets of spatially-extended hadron operators have been studied and their effectiveness in facilitating ... -
A novel method for evaluating correlation functions in lattice hadron spectroscopy
Peardon, Michael (2010)We describe a new approach for evaluating hadronic correlation functions which combines Laplacian-Heaviside quark smearing with a stochastic estimator of quark propagators. This method utilizes noise ... -
Phase shift with LapH propagators
Peardon, Michael (2010)The pion-pion scattering phase shift is computed using LapH propagators. The LapH method for computing quark propagators is used to form two-particle correlation functions with a number of different operators. Excited ... -
Radial and orbital excitations of static-light mesons
Ryan, Sinead; Peardon, Michael (2007)We present results for the spectrum of static-light mesons from Nf = 2 lattice QCD. These results were obtained using all-to-all light quark propagators on an anisotropic lattice, yielding an improved signal resolution ... -
String breaking by light and strange quarks in QCD
Peardon, Michael (Elsevier, 2019)The energy spectrum of a system containing a static quark anti-quark pair is computed for a wide range of source separations using lattice QCD with Nf=2+1 dynamical flavours. By employing a variational method with a basis ... -
String breaking with 2+1 dynamical fermions using the stochastic LapH-method
Peardon, Michael (2018)The static potential V(r) between a static quark and a static antiquark separated by a distance r is defined as the energy of the ground state of the system. As a consequence of confinement, the energy between the ...