UG-15/98 QMW-PH-98-39 SPIN-98/14 hep-th/9812224 December, 1998 Spacetime–Filling Branes and Strings with Sixteen Supercharges E. Bergshoeff 1, E. Eyras 2, R. Halbersma 3, J.P. van der Schaar 4 Institute for Theoretical Physics, University of Groningen Nijenborgh 4, 9747 AG Groningen, The Netherlands C.M. Hull 5 Physics Department, Queen Mary and Westfield College, Mile End Road, London E1 4NS, U.K. Y. Lozano 6 Spinoza Institute, University of Utrecht, Leuvenlaan 4, 3508 TD Utrecht, The Netherlands Abstract arXiv:hep-th/9812224v2 17 Aug 1999 We discuss branes whose worldvolume dimension equals the target spacetime dimension, i.e. “spacetime-filling branes”. In addition to the D9-branes, there are 9-branes in the NS-NS sectors of both the IIA and IIB strings. The worldvolume actions of these branes are constructed, via duality, from the known actions of branes with codimension larger than zero. Each of these types of branes is used in the construction of a string theory with sixteen supercharges by modding out a type II string by an appropriate discrete symmetry and adding 32 9-branes. These constructions are related by a web of dualities and each arises as a different limit of the Hoˇrava-Witten construction. 1E-mail address:
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[email protected] 1 1 Introduction and Overview This paper is concerned with spacetime-filling branes and their role in the construction of string theories with 16 supersymmetries.