Showing hep-thShow all
3 papers · 1 filter
hep-th2025
The Spectrum-generating Algebra for Bosonic Strings in a Linear Dilaton Background
Dripto Biswas
We extend the systematic construction of bosonic DDF operators to the light-like linear dilaton background to investigate how higher-spin string states behave beyond flat spacetime…
hep-th2025
The Reggeon Vertex for DDF States
Dripto Biswas, Raffaele Marotta, Igor Pesando
We provide a compact expression for the generating function of correlators involving an arbitrary number of bosonic open string DDF states. The explicit correlators for DDF sta…
hep-th2024
DDF amplitudes are lightcone amplitudes and the naturalness of Mandelstam map
Dripto Biswas, Igor Pesando
We show that on shell DDF amplitudes are on shell lightcone amplitudes and that Mandelstam maps emerge naturally with a precise normalization and are intrinsic to the DDF states. O…