Spectrum, Scattering Amplitudes, and String Field Theory of 4 Dimensional Twistor String

Abstract

The recently introduced anomaly-free twistor string in 4 dimensions is further explored. The spectrum based on the physical states and its Minkowski interpretation are examined. Scattering amplitudes with vertex operators involving gravitons and fermions are computed and are compared with Einstein-Yang-Mills amplitudes. Tree and one-loop scattering amplitudes are shown to have proper unitary factorization properties. Finally a string field theory is proposed.

35 pages, v2 has a few corrections and clarifications

References in corpus (7)

• Ambitwistor strings in 4-dimensions
• Twistor Strings for N=8 Supergravity
• Conformal Supergravity Tree Amplitudes from Open Twistor String Theory
• Propagators, BCFW Recursion and New Scattering Equations at One Loop
• Ambitwistor Strings: Worldsheet Approaches to perturbative Quantum Field Theories
• Infrared behaviour of the one-loop scattering equations and supergravity integrands
• Four Dimensional Anomaly-Free Twistor String

Cited by in corpus (1)

• A Note on Classical Aspects of the Four Dimensional Anomaly-Free Twistor String