1998/07/31 by C.M. Hull, C. M. Hull · 7 citations
Mathematics · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Black Holes and Theoretical Physics #Computer science #Duality (order theory) #Field (mathematics) #Field theory (psychology) #Geometry #Limit (mathematics) #M-theory #Mathematical analysis #Mathematical physics #Mathematics #Physics #Pulsars and Gravitational Waves Research #Pure mathematics #Quantum mechanics #Signature (topology) #Space (punctuation) #Space time #Spacetime #String (physics) #String theory #Supergravity #Supersymmetry #Theoretical physics #hep-th
paper · pdf · doi:10.1088/1126-6708/1998/11/017
published as JHEP 9811:017,1998 · Minor changes. 52 pages, 14 Postscript figures, uses phyzzx macro
arxiv created 1998/11/19 · openalex publication_date 1998/11/19 · arxiv updated 2016/09/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Versions of M-theory are found in spacetime signatures (9,2) and (6,5), in addition to the usual M-theory in 10+1 dimensions, and these give rise to type IIA string theories in 10-dimensional spacetime signatures (10,0),(9,1),(8,2),(6,4) and (5,5), and to type IIB string theories in signatures (9,1),(7,3) and (5,5). The field theory limits are 10 and 11 dimensional supergravities in these signatures. These theories are all linked by duality transformations which can change the number of time dimensions as well as the number of space dimensions, so that each should be a different limit of the same underlying theory.