BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20251008T144100EDT-2570MUCGtr@132.216.98.100 DTSTAMP:20251008T184100Z DESCRIPTION:Title: Quantum Renormalization Group.\n\nAbstract: The renormal ization group (RG) flow describes the change of effective theories as the momentum cutoff is lowered. However\, it is often hard to compute the exac t effective action because operators composed of arbitrary numbers of fiel ds and space derivatives are generated under the exact RG flow. This diffi culty is alleviated in quantum RG\, which is an exact reformulation of the Wilsonian RG. It significantly reduces the number of operators that need to be included as the full RG flow is projected onto a measure zero subspa ce of couplings while the couplings in the subspace are promoted to dynami cal variables. In this talk\, we review the basic idea of quantum RG and p resent the exact effective action of the large-N Wilson-Fisher fixed point obtained from quantum RG. Below four dimensions\, the exact effective act ion is a transcendental function of two leading scaling operators with inf initely many derivatives.\n\n \n\nOnline Please fill in this form: https:/ /forms.gle/S1NcNQ8BxkzfAXcj9\n DTSTART:20211012T193000Z DTEND:20211012T203000Z SUMMARY:Sung-Sik Lee (McMaster University\, Perimeter Institute) URL:/mathstat/channels/event/sung-sik-lee-mcmaster-uni versity-perimeter-institute-333855 END:VEVENT END:VCALENDAR