Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Search options answers only not deleted user 582

Topological quantum field theory.

13 votes

Relationship between the TQFTs in Kapustin-Witten and Ben-Zvi-Sakellaridis-Venkatesh

The (fairly poetic and ill-formed) idea in this story is that the Kapustin-Witten story and the Langlands program are about the SAME four-dimensional TQFTs, but evaluated on different "manifolds" - i. …
David Ben-Zvi's user avatar
12 votes
Accepted

What do decategorification and "compactification on a circle" have to do with each other?

In a general extended TQFT Z, the assignment $Z(X \times S^1)$ is the "dimension" of Z(X), in the following sense. Write the circle as an incoming arc followed by an outgoing arc. The incoming arc is …
David Ben-Zvi's user avatar
8 votes

Defining extended TQFTs *with point, line, surface, … operators*

Yes there's a very natural way to incorporate defects of arbitrary dimension into the formalism of extended topological field theory, and this is a vital part of the structure of TQFT. For example in …
David Ben-Zvi's user avatar
5 votes

Path integral derivation of extended TQFT

The original motivation for extended TQFTs (as introduced by Freed, Lawrence, Baez-Dolan) is indeed giving a finer form of locality, as explained by Dmitri Pavlov. However I think there are two quicke …
David Ben-Zvi's user avatar
4 votes
Accepted

Uses for (Framed) E2 algebras twisted by braided monoidal structure

I don't know specific references (the papers - in reverse chronological order - of Liang Kong, Hao Zheng, Ingo Runkel, Christoph Schweigert and Jurgen Fuchs is where I'd start), but the notion is cert …
David Ben-Zvi's user avatar