Simple Quantum Systems in Spacetimes with Closed Timelike Curves
High Energy Physics - Theory
2009-10-22 v1
Abstract
Three simple examples illustrate properties of path integral amplitudes in fixed background spacetimes with closed timelike curves: non-relativistic potential scattering in the Born approximation is non-unitary, but both an example with hard spheres and the exact solution of a totally discrete model are unitary.
Cite
@article{arxiv.hep-th/9207076,
title = {Simple Quantum Systems in Spacetimes with Closed Timelike Curves},
author = {H. David Politzer},
journal= {arXiv preprint arXiv:hep-th/9207076},
year = {2009}
}
Comments
15 pages, CALT-68-1805