Type I background fields in terms of type IIB ones
Abstract
We choose such boundary conditions for open IIB superstring theory which preserve N = 1 SUSY. The explicit solution of the boundary conditions yields effective theory which is symmetric under worldsheet parity transformation Ω : σ →  σ. We recognize effective theory as closed type I superstring theory. Its background fields, beside known Ω even fields of the initial IIB theory, contain improvements quadratic in Ω odd ones.
 Publication:

Physics Letters B
 Pub Date:
 September 2008
 DOI:
 10.1016/j.physletb.2008.07.067
 arXiv:
 arXiv:0804.2617
 Bibcode:
 2008PhLB..666..400N
 Keywords:

 11.25.w;
 04.65.+e;
 04.20.Fy;
 Strings and branes;
 Supergravity;
 Canonical formalism Lagrangians and variational principles;
 High Energy Physics  Theory
 EPrint:
 4 revtex pages, no figures