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X-WR-CALNAME:Centre for Mathematical Sciences
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X-WR-CALDESC:Events for Centre for Mathematical Sciences
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DTSTART;TZID=UTC:20121214T160000
DTEND;TZID=UTC:20121214T170000
DTSTAMP:20211023T175345
CREATED:20151210T234324Z
LAST-MODIFIED:20151211T163432Z
UID:361-1355500800-1355504400@math-sciences.org
SUMMARY:Pol Vilaseca Mainar (Trinity College Dublin)
DESCRIPTION:Lattice artefacts in the Strongly Interacting theories\nModels of Dynamical Electroweak Symmetry Breaking must display a quasi-conformal scaling behaviour in order to accomodate experimental constraints. The scaling properties of a theory can be studied using finite volume renormalization schemes. Among these\, the most practical ones are based on the Schrodinger Functional (SF). However\, SF schemes suffer from potentially large O(a) effects and special care has to be taken to remove these effets.\nHere we will compare the standard setup of the SF with Wilson quarks to a setup with chirally rotated\nboundary conditions. We study the step scaling function for SU(2) and SU(3) gauge groups in the fundamental\, 2-index symmetric and adjoint representations. We perform the O(a)-improvement of both setups at 1-loop in perturbation theory\, and we describe a way of minimizing higher order cutoff effects by an appropiate definition of the renormalised coupling.
URL:https://math-sciences.org/event/pol-vilaseca-mainar-trinity-college-dublin/
LOCATION:Room 205\, 2-5\, Kirkby Place\, Plymouth\, PL4 6DT\, United Kingdom
CATEGORIES:Seminars,Theoretical Physics
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