DOI 10.1007/s100520000247
Fermonic zero-norm states and enlarged supersymmetries of Type II string
Department of Electrophysics, National Chiao-Tung University,
Hsinchu, Taiwan, 30050, R.O.C.
Received: 12 July 1999 / Revised version: 16 September 1999 /
Published online: 17 March 2000 - © Springer-Verlag 2000
Abstract
We calculate the NS-R fermionic zero-norm states of the type II string
spectrum. The massless and some possible massive zero-norm states are
seen to be responsible for the space-time supersymmetry. The existence
of other fermionic massive zero-norm states with higher spinor-tensor
indices correspond to new enlarged boson-fermion symmetries of the
theory at high energy. We also discuss the R-R charges and R-R
zero-norm states and justify the idea that the perturbative string does
not carry the massless R-R charges.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
