The Classical Fermionic String

Abstract

The fermionic string theory presented in this and the following chapter is the Neveu-Schwarz-Ramond spinning string.We present the world-sheet action and discuss its symmetries, most notably the local N = 1 world-sheet supersymmetry. The admissible periodicity and boundary conditions lead to the distinction between Neveu-Schwarz and Ramond sectors. The oscillator expansions of the world-sheet fermions differ in the two sectors. We close with an appendix on spinors in two dimensions. Quantisation of the fermionic string will be the subject of the following chapter. © Springer-Verlag Berlin Heidelberg 2013.