High Energy / Nuclear Theory / RIKEN Seminars

[NT/RBRC hybrid seminar] The role of exotic operators in determining the finite-volume spectrum from Lattice QCD and its consequences

Name: [NT/RBRC hybrid seminar] The role of exotic operators in determining the finite-volume spectrum from Lattice QCD and its consequences
Start: 2023-08-18T11:00:00-04:00
End: 2023-08-18T13:00:00-04:00
Location: https://bnl.zoomgov.com/j/1614715193?pwd=WkwxODVWdzZzb29zQnZRVGp3VTBDQT09

by Sarah Skinner (Carnegie Mellon University)

Friday 18 Aug 2023, 11:00 → 13:00 US/Eastern

Large Seminar Room (https://bnl.zoomgov.com/j/1614715193?pwd=WkwxODVWdzZzb29zQnZRVGp3VTBDQT09)

Large Seminar Room

https://bnl.zoomgov.com/j/1614715193?pwd=WkwxODVWdzZzb29zQnZRVGp3VTBDQT09

Description

There are several methods to calculate QCD scattering information on the lattice, but one of the most popular methods is the Lüscher formalism. In this talk, I will discuss how we use the finite-volume energy spectrum and the Lüscher formalism to calculate infinite-volume scattering results, and how it may require non-intuitive methods. Using $N_f=2+1$ lattice QCD for pion masses near 200 MeV, a summary of the $\Delta$ resonance calculation is reviewed, as well as quick looks at the $K_0^\ast(700)$, $a_0(980)$, deuteron, and dineutron scattering channels.

Organised by

Andrew Hanlon