English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present a classification of $W$ algebras and superalgebras arising inAbelian as well as non Abelian Toda theories. Each model, obtained from aconstrained WZW action, is related with an $Sl(2)$ subalgebra (resp. $OSp(1|2)$superalgebra) of a simple Lie algebra (resp. superalgebra) $\cg$. However, thedetermination of an $U(1)_Y$ factor, commuting with $Sl(2)$ (resp. $OSp(1|2)$),appears, when it exists, particularly useful to characterize the corresponding$W$ algebra. The (super) conformal spin contents of each $W$ (super)algebra isperformed. The class of all the superconformal algebras (i.e. with conformalspins $s\leq2$) is easily obtained as a byproduct of our general results.Comment: 66 pages (Latex), ENSLAPPP-A-391/92 Replaces previous unLatexable  version, corrupted by maile

W-algebras and superalgebras from constrained WZW models: A group theoretical classification