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X-FROM-URL:https://eom.sdu.dk/events/ical/28c06f20-3be0-4029-9192-228f1163
 5b4e
X-WR-CALNAME:QM Research Seminar: Abelianization of Virasoro conformal blo
 cks at $c=1$
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TZID:Europe/Copenhagen
X-LIC-LOCATION:Europe/Copenhagen
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DTSTAMP:20260413T235209Z
DTSTART:20261028T030000
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DTSTART:20260325T020000
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DESCRIPTION:[b]Speaker: Qianyu Hao[/b] (University of Geneva) [nl][nl]\n[b
 ]Abstract:[/b][nl]\nConformal blocks are essential objects to study in th
 e 2d CFTs. They depend on the data of a vertex algebra $\CV$\, a puncture
 d Riemann surface $C$\, and possible decorations inserted at the puncture
 s. The Virasoro conformal blocks are very interesting since they have man
 y connections to other areas of math and physics. I will describe a new w
 ay to construct Virasoro conformal blocks at $c=1$. This is closely relat
 ed to the idea of nonabelianization in the study of $SL(N\,\mathbb{C})$ c
 onnections by using $GL(1\,\mathbb{C})$ connection in the work of Gaiotto
 -Moore-Neitzke and Hollands-Neitzke. I will talk about our work on relati
 ng the $c=1$ Virasoro conformal blocks on $C$ to the "abelian" Heisenberg
  conformal blocks on a branched double cover of $C$. The main new idea in
  our work is the use of the spectral network on the surface $C$. The nona
 belianization construction enables us to study the harder to get Virasoro
  conformal blocks using the simpler abelian objects. This is joint work i
 n progress with Andrew Neitzke.\n[nl]\n[nl]
DTEND:20240321T133000Z
DTSTAMP:20260413T235209Z
DTSTART:20240321T123000Z
LOCATION:Syddansk Universitet\, Campusvej 55\, 5230\, Odense M
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SUMMARY:QM Research Seminar: Abelianization of Virasoro conformal blocks a
 t $c=1$
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