Adam Lichtl

Lattice QCD determination of patterns of excited baryon states

Energies for excited isospin I = 1/2 and I = 3/2 states that include the nucleon and Delta families of baryons are computed using quenched, anisotropic lattices. Baryon interpolating field operators that are used include nonlocal operators that provide G2 irreducible representations of the octahedral group. The decomposition of spin 5/2 or higher spin states is realized for the first time in a lattice QCD calculation. We observe patterns of degenerate energies in the irreducible representations of the octahedral group that correspond to the subduction of the continuum spin 5/2 or higher. The overall pattern of low-lying excited states corresponds well to the pattern of physical states subduced to the irreducible representations of the octahedral group.

Excited state nucleon spectrum with two flavors of dynamical fermions

Excited states for isospin

Towards the determination of the spectrum of QCD using a space-time lattice

\frac{1}{2}

The spectral structure of correlator matrices

baryons are calculated using lattice QCD with two flavors of dynamical quarks. Anisotropic lattices are used with two pion masses,

Group Theoretical Construction of Nucleon Operators using All-to-All Quark Propagators

m_{\pi} = 416(36)

Lattice QCD determination of states with spin 5/2 or higher in the spectrum of nucleons

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