A Judgement on Sinors

Abstract

This note contains some comments on a recent paper by Friedman on two-component spinors in spacetimes which do not admit a time-orientation, and is intended to clarify the relation of the work reported in that paper to previous literature.

10 pages, plain TEX

References in corpus (2)

• Complex Numbers, Quantum Mechanics and the Beginning of Time
• On the Obstructions to non-Cliffordian Pin Structures

Cited by in corpus (5)

• The Pin Groups in Physics: C, P, and T
• Nucleating Black Holes via Non-Orientable Instantons
• The Taming of Closed Time-like Curves
• Quantum field theory in Lorentzian universes-from-nothing
• Existence of Majorana fermions for M-branes wrapped in space and time