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SUMMARY:Towards a formalism for pion-pion scattering from staggered lattic
 e QCD
DTSTART:20260707T130000Z
DTEND:20260707T150000Z
DTSTAMP:20260712T115500Z
UID:indico-event-1490@indico.hiskp.uni-bonn.de
DESCRIPTION:Speakers: Dean Valois (Granada University)\n\nScattering proce
 sses involving the strong interactions can be studied using lattice QCD vi
 a the Lüscher formalism. This approach relies on analyticity and unitarit
 y of the S-matrix to relate finite-volume energies to infinite-volume sca
 ttering amplitudes. On the one hand\, one of the most common lattice QCD a
 ctions relies on staggered fermions due to their high computational effici
 ency. On the other hand\, simulations employing staggered fermions manifes
 t highly non-trivial discretization artifacts that are not accounted for 
 in the standard Lüscher formalism. Although these artifacts scale with t
 he lattice spacing squared and thus disappear in the continuum\, at non-z
 ero lattice spacing\, they hinder the applicability of the formalism to c
 alculate scattering amplitudes. In this talk\, we will start with an overv
 iew of the standard Lüscher formalism and then discuss how to deal with t
 he challenges of extracting scattering amplitudes from staggered lattice Q
 CD by generalizing the formalism to incorporate staggered lattice artifact
 s.\n\nhttps://indico.hiskp.uni-bonn.de/event/1490/
LOCATION:Nußallee 14-16/0.023 (HISKP) - Lecture Hall (HISKP)
URL:https://indico.hiskp.uni-bonn.de/event/1490/
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