- #1

- 1,185

- 349

## Main Question or Discussion Point

PF regular @Urs Schreiber has coauthored a new paper:

http://arxiv.org/abs/1805.00233

Hisham Sati, Urs Schreiber

(Submitted on 1 May 2018)

By analyzing super-torsion and brane super-cocycles, we derive a new duality in M-theory, which takes the form of a higher version of T-duality in string theory. This involves a new topology change mechanism abelianizing the 3-sphere associated with the C-field topology to the 517-torus associated with exceptional-generalized super-geometry. Finally we explain parity symmetry in M-theory within exceptional-generalized super-spacetime at the same level of spherical T-duality, namely as an isomorphism on 7-twisted cohomology.

There's a lot in this paper and I am looking forward to understanding it. :-)

http://arxiv.org/abs/1805.00233

**Higher T-duality in M-theory via local supersymmetry**Hisham Sati, Urs Schreiber

(Submitted on 1 May 2018)

By analyzing super-torsion and brane super-cocycles, we derive a new duality in M-theory, which takes the form of a higher version of T-duality in string theory. This involves a new topology change mechanism abelianizing the 3-sphere associated with the C-field topology to the 517-torus associated with exceptional-generalized super-geometry. Finally we explain parity symmetry in M-theory within exceptional-generalized super-spacetime at the same level of spherical T-duality, namely as an isomorphism on 7-twisted cohomology.

There's a lot in this paper and I am looking forward to understanding it. :-)