Special relativity and reduced spin density matrices
Quantum Physics
2009-11-10 v1
Abstract
We derive the general formula for Lorentz-transformed spin density matrix. It is shown that an appropriate Lorentz transformation can prduce totally unpolarized state out of pure one. Further properties, as depurification by an arbitrary Lorentz boost and its relation to the localization properties are also discussed.
Cite
@article{arxiv.quant-ph/0310132,
title = {Special relativity and reduced spin density matrices},
author = {Cezary Gonera and Piotr Kosinski and Pawel Maslanka},
journal= {arXiv preprint arXiv:quant-ph/0310132},
year = {2009}
}
Comments
7 pages