Revision 1

Accepted · first revision · record

Title: Background-independent definition of M-theory
Plain: Each known exact definition of string theory assumes a fixed shape of spacetime at infinity. A definition that does not assume a background is missing.
Precise: Exact definitions of string and M-theory exist for asymptotically AdS spacetimes (dual CFTs) and for flat space in light-cone frame (BFSS matrix theory), each tied to asymptotic boundary conditions. Find a formulation whose Hilbert space and observables do not presuppose a background and which contains these as special sectors.
Settled by: A formulation from which at least two known exact definitions with different asymptotics are derived as sectors.
Kind: phenomenon
Answer type: identification
References: (empty)
Literature status: open
Status note: (empty)
Posed since: 1995