6 papers
The spectrum of the bosonic ambitwistor string revisited
José M. Figueroa-O'Farrill, Girish S. Vishwa
We revisit the calculation of the spectrum of the bosonic ambitwistor string, understood as the BRST cohomology or, equivalently, as the semi-infinite cohomology of the $\mathrm{BM…
On the boundary Carrollian conformal algebra
Lucas Buzaglo, Xiao He, Tuan Anh Pham +3
We initiate the mathematical study of the boundary Carrollian conformal algebra (BCCA), an infinite-dimensional Lie algebra recently discovered in the context of Carrollian physics…
Non-relativistic quantum strings from gauged WZW models
José M Figueroa-O'Farrill, Girish S Vishwa
We construct non-relativistic quantum strings from gauged Wess--Zumino--Witten (WZW) models. We depart from the fact that Lie groups with a bi-invariant galilean structure can be s…
BMS-like algebras: canonical realisations and BRST quantisation
Carlos Batlle, José Figueroa-O'Farrill, Joaquim Gomis +1
We generalise BMS algebras in three dimensions by the introduction of an arbitrary real parameter , recovering the standard algebras (BMS, extended BMS and Weyl-BMS) for .…
Central extensions, derivations, and automorphisms of semi-direct sums of the Witt algebra with its intermediate series modules
Lucas Buzaglo, Girish S. Vishwa
Lie algebras formed via semi-direct sums of the Witt algebra and its modules have become increasingly prominent in both physics and mathematics i…
The BRST quantisation of chiral BMS-like field theories
José Figueroa-O'Farrill, Girish S Vishwa
The BMS Lie algebra belongs to a one-parameter family of Lie algebras obtained by centrally extending abelian extensions of the Witt algebra by a tensor density representation.…