2014/03/21 by Eric D'Hoker, D'Hoker, Eric
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #hep-th
paper · pdf · doi:10.48550/arxiv.1403.5494
27 pages, 5 figures, Dedicated to D.H. Phong on the occasion of his 60-th birthday; version 2 includes minor changes and added references in section 11
arxiv created 2014/03/29 · arxiv updated 2014/04/01
In this contribution to the Proceedings of the Conference on Analysis, Complex Geometry, and Mathematical Physics, an expository overview of superstring perturbation theory to two loop order is presented to an audience of mathematicians and physicists. Recent results on perturbative supersymmetry breaking effects in Heterotic string theory compactified on Z2 × Z2 Calabi-Yau orbifolds, and the calculation of the two-loop vacuum energy in these theories are discussed in detail, and the appearance of a new modular identity with respect to Sp(4,Z)/Z4 is reviewed.