Excited hadrons from improved interpolating fields
Tommy Burch, Christof Gattringer, Leonid Ya. Glozman, Reinhard, Kleindl, C. B. Lang, and Andreas Sch\"afer
TL;DR
This paper introduces a new method for constructing optimized operators for lattice spectroscopy of excited hadrons, improving the study of states like the Roper and excited mesons.
Contribution
It presents a novel approach combining Jacobi smeared sources to enhance the analysis of excited hadron states in lattice QCD.
Findings
Successful construction of spatially optimized operators
Application to Roper, rho, and pion excited states
Improved spectral analysis of excited hadrons
Abstract
The calculation of quark propagators for Ginsparg-Wilson-type Dirac operators is costly and thus limited to a few different sources. We present a new approach for determining spatially optimized operators for lattice spectroscopy of excited hadrons. Jacobi smeared quark sources with different widths are combined to construct hadron operators with different spatial wave functions. We study the Roper state and excited rho and pion mesons.
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