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Résumé |
I will review some recent developments of type II and heterotic superstring field theory. The approach I will
follow is due to Ashoke Sen and based on the construction of the open-closed bosonic string field theory by
Zwiebach. Particular attention will be devoted to the three main challenges faced by superstring field theory:
inclusion of the Ramond sector, removal of spurious singularities due to the superconformal ghosts and
definition of a prescription for the off-shell amplitudes. The plan is the following: 1) motivations, divergences
in (super)string theory and off-shell amplitudes; 2) superstring field theory: gauge fixed and quantum action,
construction of the Ramond sector 3) momentum representation of amplitudes, applications: unitarity, soft
theorems |
