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DTSTART:19700329T010000
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CATEGORIES:Quantum Fields and Strings Seminars
SUMMARY:Combining local and extended operator algebras: 4d
N = 2 vertex algebras and semi-topological descen
t - Mitch Weaver (Cincinnati)
DTSTART;TZID=Europe/London:20220526T150000
DTEND;TZID=Europe/London:20220526T160000
UID:TALK173276AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/173276
DESCRIPTION:Algebras of supersymmetry-protected local and exte
nded operators can pro- vide an analytic window on
to the structure of supersymmetric quantum field t
heories\, even when they are strongly interacting.
For example\, 4d N = 2 SCFTs have a sub- sector o
f local operators in the cohomology of a particula
r nilpotent supercharge which maps to a 2d vertex
operator algebra (VOA)\, and certain surface opera
tors in these theories correspond to non-vacuum mo
dules of the VOA. In this talk\, I will present a
construction of extended operators residing in the
cohomology of the VOA supercharge using the idea
of topological descent. In doing so\, I will show
there exists a fascinating web of extended operato
rs in every unitary 4d N = 2 SCFT which extends th
e structure furnished by the VOA. To demonstrate t
he richness of this extended operator algebra and
its relation to the VOA\, I will describe this con
struction for the simple case of a free hypermulti
plet.
LOCATION:Online (Zoom)
CONTACT:Chiung Hwang
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