Theory Seminar - Dorota M. Grabowska
- Theory Seminar - Dorota M. Grabowskahttps://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09Remote2022-04-06EDT13:00:00 ~ 2022-04-06EDT14:00:0016707
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Speaker: Dorota M Grabowska (CERN)
Title: Extracting Phase Shifts from Finite-Volume Simulations
Abstract: An overwhelming body of evidence has established quantum chromodynamics (QCD) as the underlying theory of the strong nuclear force. However, due to a mismatch between the fundamental fields of the theory (quarks and gluons) and the low-energy degrees of freedom (hadrons), the extraction of ab-initio observables is challenging. Lattice QCD, which utilises importance sampling to numerically estimate Euclidean spacetime quantum path integrals, is a proven method for reliably determining the properties of QCD. The last years have seen significant developments in methods relating two- and three-particle finite-volume energies to scattering observables. In this seminar, I will present my work on analytic expansions of these multi-hadron finite-volume energies, which provide both useful insights and beneficial cross checks on more general methods.