Non-Supersymmetric T^2/Z_N and T^4/Z_N Orbifolds
arXiv:hep-th/0403274
Abstract
We compute the perturbative tachyonic and massless spectra of Type II and Type 0 string theories on non-supersymmetric T^2/Z_N orbifolds, and those on T^4/Z_N ones. Comparing the spectra with one another, we obtain insight about the degeneracy of states and find several pairs of Type 0 orbifolds which could be identified with each other.
31 pages