87 citations · 429 across the 19 of their papers we have counts for
16 papers · 1 filter
Low-lying positive-parity excited states of the nucleon
M. S. Mahbub, Alan Ó Cais, Waseem Kamleh +3
We present an overview of the correlation-matrix methods developed recently by the CSSM Lattice Collaboration for the isolation of excited states of the nucleon. Of particular inte…
Isolating the Roper Resonance in Lattice QCD
M. S. Mahbub, Alan Ò Cais, Waseem Kamleh +3
We present results for the first positive parity excited state of the nucleon, namely, the Roper resonance (=1440 MeV) from a variational analysis technique. The ana…
Isolating Excited States of the Nucleon in Lattice QCD
M. S. Mahbub, Alan Ò Cais, Waseem Kamleh +3
We discuss a robust projection method for the extraction of excited-state masses of the nucleon from a matrix of correlation functions. To illustrate the algorithm in practice, we…
Preconditioning Maximal Center Gauge with Stout Link Smearing in SU(3)
Alan Ó Cais, Waseem Kamleh, Kurt Langfeld +5
Center vortices are studied in SU(3) gauge theory using Maximal Center Gauge (MCG) fixing. Stout link smearing and over-improved stout link smearing are used to construct a precond…
Centre Vortices in SU(3)
Alan Ó Cais, Waseem Kamleh, Kurt Langfeld +3
We investigate the effectiveness of using smearing as a means to generate a preconditioning transformation for gauge fields prior to fixing to Maximal Centre Gauge. This still leav…
Scaling analysis of FLIC fermion actions
Waseem Kamleh, Ben Lasscock, Derek B. Leinweber +1
The Fat Link Irrelevant Clover (FLIC) fermion action is a variant of the -improved Wilson action where the irrelevant operators are constructed using smeared links. While the…