
Open access
Date
2011-06Type
- Journal Article
Abstract
The perturbative spectrum of BPS-states in the E 8 × E 8 heterotic string theory compactified on T2 is analysed. We show that the space of BPS-states forms a representation of a certain Borcherds algebra G which we construct explicitly using an auxiliary conformal field theory. The denominator formula of an extension Gext⊃G of this algebra is then found to appear in a certain heterotic one-loop N=4 topological string amplitude. Our construction thus gives an N=4 realisation of the idea envisioned by Harvey and Moore, namely that the ‘algebra of BPS-states’ controls the threshold corrections in the heterotic string. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000039567Publication status
publishedExternal links
Journal / series
Journal of High Energy PhysicsVolume
Pages / Article No.
Publisher
SpringerSubject
Superstrings and Heterotic Strings; Gauge Symmetry; Conformal Field Models in String Theory; Topological StringsOrganisational unit
03657 - Gaberdiel, Matthias / Gaberdiel, Matthias
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