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SUMMARY:Twistor construction of Coulomb branches - Roger  Bielawski (Leibn
 iz Universität Hannover)
DTSTART:20240904T090000Z
DTEND:20240904T100000Z
UID:TALK219865@talks.cam.ac.uk
DESCRIPTION:There has been considerable interest in Coulomb branches\, i.e
 . (singular)hyperkaehler manifolds which arise as certain irreducible comp
 onents of moduli spacesof vacua in N=4 supersymmetric quantum gauge theori
 es. For a restricted class of theories\,Coulomb branches have been rigouro
 usly constructed\, as affine Poisson varieties\,by Braverman\, Finkelberg\
 , and Nakajima. This construction has been subsequentlyextended to a more 
 general class of theories by several authors. In my talk I shallpresent an
  alternative construction\, which\, in addition to being simpler\, yields 
 the fullhyperkaehler structure of Coulomb branches. This is joint work wit
 h Lorenzo Foscolo.
LOCATION:Seminar Room 2\, Newton Institute
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