|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Gerbe-holonomy for surfaces with defect networks | | Ingo Runkel
; Rafal R. Suszek
; | | Date: |
11 Aug 2008 | | Abstract: | We define the sigma-model action for world-sheets with embedded defect
networks in the presence of a three-form field strength. We derive the defect
gluing condition for the sigma-model fields and their derivatives, and use it
to distinguish between conformal and topological defects. As an example, we
treat the WZW model with defects labelled by elements of the centre Z(G) of the
target Lie group G; comparing the holonomy for different defect networks gives
rise to a 3-cocycle on Z(G). Next, we describe the factorisation properties of
two-dimensional quantum field theories in the presence of defects and compare
the correlators for different defect networks in the quantum WZW model. This,
again, results in a 3-cocycle on Z(G). We observe that the cocycles obtained in
the classical and in the quantum computation are cohomologous. | | Source: | arXiv, 0808.1419 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER