@article{5ffa72ff025740a5a2385833a28cffae,
title = "Some remarks on two-loop superstring calculations",
abstract = "Recent advances in the calculation of higher loop superstring amplitudes have made possible explicit calculations at two-loops. The results exhibit some disturbing features that we address. One partial resolution leads to a modular invariant combination of Riemann identities.",
author = "G. Moore and A. Morozov",
note = "Funding Information: We are very grateful to the Aspen Center for Physics for making this collaboration possible. We have profited greatly from discussions with M. Bowick, E. D'Hoker, L. Dixon, M. Grisaru, D. Gross, J. Harvey, P. Nelson, D. Phong, A. Strominger and D. Zanon. A.M. would also like to thank V. Knizhnik, M. Olshenetsky, A. Perelomov, and A. Rosly for many informative and enjoyable discussions. G.M. is very grateful to J. Atick, N. Seiberg, and E. Witten for discussions and to J. Harvey for the use of computer facilities. The work of G.M. is supported in part by DOE contract DE-AC02-76ER02220 and by a fellowship from the Harvard Society of Fellows.",
year = "1988",
month = aug,
day = "22",
doi = "10.1016/0550-3213(88)90698-0",
language = "English (US)",
volume = "306",
pages = "387--404",
journal = "Nuclear Physics, Section B",
issn = "0550-3213",
publisher = "Elsevier B.V.",
number = "2",
}