47 citations · 145 across the 7 of their papers we have counts for
7 papers · 1 filter
N* Spectroscopy from Lattice QCD: The Roper Explained
Derek Leinweber, Waseem Kamleh, Adrian Kiratidis +6
This brief review focuses on the low-lying even- and odd-parity excitations of the nucleon obtained in recent lattice QCD calculations. Commencing with a survey of the 2014-15 lite…
Exploring the Roper wave function in Lattice QCD
Waseem Kamleh, Derek B. Leinweber, Dale S. Roberts
Using a correlation matrix analysis consisting of a variety of smearings, the CSSM Lattice collaboration has successfully isolated states associated with the Roper resonance and ot…
Nucleon Excited State Wave Functions from Lattice QCD
Dale S. Roberts, Waseem Kamleh, Derek B. Leinweber
We apply the eigenvectors from a variational analysis to successfully extract the wave functions of even-parity excited states of the nucleon, including the Roper. We explore the f…
Quark Propagation in the Instantons of Lattice QCD
Amalie Trewartha, Waseem Kamleh, Derek Leinweber +1
We quantitatively examine the extent to which instanton degress of freedom, contained within standard Monte-carlo generated gauge-field configurations, can maintain the characteris…
Wave Function of the Roper from Lattice QCD
Dale S. Roberts, Waseem Kamleh, Derek B. Leinweber
We apply the eigenvectors from a variational analysis in lattice QCD to successfully extract the wave function of the Roper state, and a higher mass P_11 state of the nucleon. We u…
Accessing High Momentum States In Lattice QCD
Dale S. Roberts, Waseem Kamleh, Derek B. Leinweber +2
Two measures are defined to evaluate the coupling strength of smeared interpolating operators to hadronic states at a variety of momenta. Of particular interest is the extent to wh…
Wave Functions of the Proton Ground State in the Presence of a Uniform Background Magnetic Field in Lattice QCD
Dale S. Roberts, Patrick O. Bowman, Waseem Kamleh +1
We calculate the probability distributions of quarks in the ground state of the proton, and how they are affected in the presence of a constant background magnetic field. We focus…