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Spinors and space-time Roger Penrose, Wolfgang Rindler
Publisher: Cambridge University Press

To convey, unsuccessfully (due to my poor use of the English language) here for some time. In order to handle properly full covariance for physical fields under spacetime transformations the superbundle of geometric objects is introduced. With this new formalism, the invariant differential of the curved space-time is a quaternion-valued scalar. T = 0 (ξ = 0) corresponds then to the origin of time in our Universe. The next step in explicating the geometric structure of the Dirac theory is to reformulate it in terms of the spacetime algebra. The original argument for absence of space-time SUSY years ago was indirect: M4× CP2 does not allow Majorana spinors so that N=1 SUSY is excluded. With space-time SU(2) spinors, one can introduce a cosmic time t = | ξ | where | ξ | is the spinor modulus. Snapshot 3: rotation by is required to recover the initial state. €�Spinors”, “trapped energy spheres in very tiny spaces”, once I even called them Fermi spheres which you quickly corrected me, thank you. (And it is why gravitational waves — waves in space and time, massless just like light — can be formed by objects that are orbiting one another.) Simply put, the Einsteinian view of gravity (now reasonably well confirmed by experiment) .. Rindler, Spinors and Space-Time: Volume 2, Spinor and Twistor Methods in Space-Time Geometry, Cambridge: Cambridge University Press, 1988.