From Wave Geometry to Fake Supergravity

Understand

The `Wave Geometry' equation of the pre-WWII Hiroshima program is also the key equation of the current `fake supergravity' program.

• I review the status of (fake) supersymmetric domain walls and (fake) pseudo-supersymmetric cosmologies.
• An extension of the domain-wall/cosmology correspondence to a triple correspondence with instantons shows that `pseudo-supersymmetry' has another interpretation as Euclidean supersymmetry.