Triality, Periodicity and Stability of SO(8) Gauged Supergravity

Understand

While electromagnetic duality is a symmetry of many supergravity theories, this is not the case for the N=8 gauged theory.

• It was recently shown that this rotation leads to a one-parameter family of SO(8) supergravities.
• It is an open question what the period of this parameter is.
• This issue is investigated in the SO(4) invariant sectors of the theory.