Jacob Fallica
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View article: $K\pi$ scattering and excited meson spectroscopy using the Stocastic LapH method
$K\pi$ scattering and excited meson spectroscopy using the Stocastic LapH method Open
Elastic I = 1/2, s- and p-wave Kπ scattering amplitudes are simultaneously calculated using a Lüscher style analysis on a single ensemble of dynamical Wilson-clover fermions at mπ ∼ 230 MeV. Partial wave mixing due to the reduce…
View article: Coupling to Multihadron States with Chiral Fermions
Coupling to Multihadron States with Chiral Fermions Open
Chiral symmerty is presumed to be a crucial component in the strong interaction and QCD, but its role in spectroscopy, especially for baryons, has not been fully explored. Compounding this, chiral fermions are uncommon in lattice calculati…
View article: Scattering phase shift determinations from atwo-scalar field theory
Scattering phase shift determinations from atwo-scalar field theory Open
A field theory involving two interacting scalar fields, previously studied by Rummukainen and Gottlieb, is revisited. Our study is not restricted to the limit of large quartic couplings, and a Symanzik-improved action is used so that conti…
View article: Coupling to Multihadron States with Chiral Fermions
Coupling to Multihadron States with Chiral Fermions Open
Chiral symmerty is presumed to be a crucial component in the strong interaction and QCD, but its role in spectroscopy, especially for baryons, has not been fully explored. Compounding this, chiral fermions are uncommon in lattice calculati…
View article: $Kπ$ scattering and excited meson spectroscopy using the stochastic LapH method
$Kπ$ scattering and excited meson spectroscopy using the stochastic LapH method Open
Elastic $I=1/2$, $s$- and $p$-wave $Kπ$ scattering amplitudes are simultaneously calculated using a Lüscher style analysis on a single ensemble of dynamical Wilson-clover fermions at $m_π\sim 230$ MeV. Partial wave mixing due to the reduce…
View article: $K\pi$ scattering and excited meson spectroscopy using the stochastic LapH method
$K\pi$ scattering and excited meson spectroscopy using the stochastic LapH method Open
Elastic $I=1/2$, $s$- and $p$-wave $K\pi$ scattering amplitudes are simultaneously calculated using a L\"uscher style analysis on a single ensemble of dynamical Wilson-clover fermions at $m_\pi \sim 230$ MeV. Partial wave mixing due to the…
View article: Scattering phase shift determinations from a two-scalar field theory
Scattering phase shift determinations from a two-scalar field theory Open
A field theory involving two interacting scalar fields, previously studied by Rummukainen and Gottlieb, is revisited. Our study is not restricted to the limit of large quartic couplings, and a Symanzik-improved action is used so that conti…
View article: Lambda Baryon Spectroscopy and Pion-Pion Scattering with Partial Wave Mixing in Lattice QCD
Lambda Baryon Spectroscopy and Pion-Pion Scattering with Partial Wave Mixing in Lattice QCD Open
The spectrum of [lambda] three-quark excitations and [pion pion] scattering, with partial-wave mixing,are studied using lattice QCD. These low-lying stationary-state energies in QCDare calculated as correlation lengths in a statistical fie…
View article: Excited-state energies and scattering phase shifts from lattice QCD with the stochastic LapH method
Excited-state energies and scattering phase shifts from lattice QCD with the stochastic LapH method Open
Recent results in computing excited-state energies and meson-meson scattering phase shifts in lattice QCD are presented. A stochastic method of treating the low-lying modes of quark propagation that exploits Laplacian Heaviside quark-field…