Untitled

Abstract

We present arguments that in 4-dimensions quantum matter, geometry and gravity are related in a special, new way. This is based on the geometry of exotic smooth R 4 k , k even, which on the one hand underlies the effective states of quantum matter, as in Kondo effect, and on the other, refers to exact superstring backgrounds. This kind of link of geometry and quantum matter allows for quantum treatment of gravity confined to exotic R 4 k .