"The Central Programme of twistor theory"
Roger Penrose, 1999
(from "Chaos, solitons and fractals"

Keywords: general relativity, quantum mechanics, quantum gravity, background metric, Planck scale, decoherence, instability, entangled quantum states, acausality, photon history, complex space-time, spin, positive frequency, mass, non-Hausdorff bifurcation, quantum state reduction

URL: http://users.ox.ac.uk/~tweb/00002/index.shtml