11 papers
Understanding the structure of nucleon excitations from their wavefunctions
Jackson A. Mickley, Waseem Kamleh, Derek B. Leinweber +1
Relativistic wavefunctions of nucleon excitations are scrutinised to understand their node structure and the underlying role of local interpolating fields in generating the nucleon…
Structure of QCD ground state fields at nonzero matter densities
Ragib F. Hasan, Matthew Cummins, Waseem Kamleh +4
A quantitative investigation into the modification of ground-state field structures in two-color QCD (QCD) is presented at finite chemical potential. Using lattice simulations…
The temperature dependence of fractional topological charge objects
Jackson A. Mickley, Waseem Kamleh, Derek B. Leinweber
We present a novel method for defining the topological charge contained within distinct topological objects in the nontrivial ground-state fields of SU(N) lattice gauge theory. Suc…
SU(3) centre vortex geometry at finite temperature
Jackson A. Mickley, Waseem Kamleh, Derek B. Leinweber
The importance of examining the structure of centre-vortex matter in the ground-state fields of nonabelian gauge-field theory has been demonstrated in the recent centre-vortex base…
Physical interpretation of the 2s excitation of the nucleon
Finn M. Stokes, Waseem Kamleh, Derek B. Leinweber +1
Lattice QCD calculations of the radial excitation of the nucleon place the state at an energy of approximately 1.9 GeV, raising the possibility that it is associated with the…
Magnetic polarisability of octet baryons near the physical quark-mass point
Thomas Kabelitz, Waseem Kamleh, Derek Leinweber
The magnetic polarisabilities of octet baryons are calculated close to the physical quark-mass point using the background field method in lattice QCD. This first calculation draws…