Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published July 27, 2007 | Submitted + Published
Journal Article Open

Nondecoupling of Maximal Supergravity from the Superstring


We consider the conditions necessary for obtaining perturbative maximal supergravity in d dimensions as a decoupling limit of type II superstring theory compactified on a (10-d) torus. For dimensions d=2 and d=3, it is possible to define a limit in which the only finite-mass states are the 256 massless states of maximal supergravity. However, in dimensions d>=4, there are infinite towers of additional massless and finite-mass states. These correspond to Kaluza-Klein charges, wound strings, Kaluza-Klein monopoles, or branes wrapping around cycles of the toroidal extra dimensions. We conclude that perturbative supergravity cannot be decoupled from string theory in dimensions >=4. In particular, we conjecture that pure [script N]=8 supergravity in four dimensions is in the Swampland.

Additional Information

© 2007 The American Physical Society (Received 9 May 2007; published 25 July 2007) We thank Z. Bern, N. Dorey, C. Hull, J. Russo, N. Seiberg, A. Sen, M. Shigemori, Y. Tachikawa, D. Tong, P. Vanhove, and E. Witten for discussions. H.O. thanks the particle theory group of the University of Tokyo for hospitality. H.O. and J.H.S. are supported in part by DOE Grant No. DE-FG03-92-ER40701. The research of H.O. is also supported in part by NSF Grant No. OISE-0403366 and by the 21st Century COE Program at the University of Tokyo.

Attached Files

Published - GREprl07.pdf

Submitted - 0704.0777.pdf


Files (212.1 kB)
Name Size Download all
91.7 kB Preview Download
120.4 kB Preview Download

Additional details

August 22, 2023
October 16, 2023