BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Javier Mangan (UPenn) DTSTART:20221115T150000Z DTEND:20221115T160000Z DTSTAMP:20260423T021011Z UID:SymSem/21 DESCRIPTION:Title: Generalized symmetries\, Noether and Weinberg-Witten\nby Javier Mangan (UPenn) as part of Symmetry Seminar\n\n\nAbstract\nIn this talk we descri be new theorems concerning the mixing of symmetries in QFT. In particular\ ,\nwe show that generalized symmetries cannot be charged under a continuou s global symmetry having a Noether\ncurrent. The results follow from a fin er classification of twist operators\, which naturally extends to\nfinite group global symmetries. They unravel topological obstructions to the stro ng version of Noether’s\ntheorem in QFT\, even if under general conditio ns a global symmetry can be implemented locally by twist\noperators (weak version). We use these results to rederive Weinberg-Witten’s theorem wit hin local QFT\,\ngeneralizing it in several directions. We end up discussi ng the conditions for the strong version to hold\,\ndynamical aspects of Q FT’s with non-compact generalized symmetries\, scale vs conformal invari ance in QFT\nand connections with the Coleman-Mandula theorem.\n LOCATION:https://researchseminars.org/talk/SymSem/21/ END:VEVENT END:VCALENDAR