2009/02/28 by U. Gran, J. Gutowski, G. Papadopoulos
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1007/jhep01(2010)044
published as JHEP 1001:044,2010 · 30 pages, typos corrected
We show that all IIB backgrounds with strictly 28 supersymmetries are locally isometric to the plane wave solution of arXiv:hep-th/0206195. Moreover, we demonstrate that all solutions with more than 26 supersymmetries and only 5-form flux are maximally supersymmetric. The N=28 plane wave solution is a superposition of the maximally supersymmetric IIB plane wave with a heterotic string solution. We investigate the propagation of strings in this background, find the spectrum and give the string light-cone Hamiltonian.