Refined Partition Functions for Open Superstrings with 4, 8 and 16 Supercharges

Understand

We analyse the perturbative massive open string spectrum of even dimensional superstring compactifications with four, eight and sixteen supercharges.

• In each of such cases, we focus on universal states that exist independently on the internal geometry and other compatification details.
• We analytically compute refined partition functions that count these states at each mass level.
• Such refined partition functions are written in a super-Poincare covariant form, providing information on how supermultiplets transform under the little group and the R symmetry.