Examples of bosonic de Finetti states over finite dimensional Hilbert spaces
Quantum Physics
2009-11-11 v2
Abstract
According to the Quantum de Finetti Theorem, locally normal infinite particle states with Bose-Einstein symmetry can be represented as mixtures of infinite tensor powers of vector states. This note presents examples of infinite-particle states with Bose-Einstein symmetry that arise as limits of Gibbs ensembles on finite dimensional spaces, and displays their de Finetti representations. We consider Gibbs ensembles for systems of bosons in a finite dimensional setting and discover limits as the number of particles tends to infinity, provided the temperature is scaled in proportion to particle number.
Keywords
Cite
@article{arxiv.quant-ph/0506111,
title = {Examples of bosonic de Finetti states over finite dimensional Hilbert spaces},
author = {Alex D. Gottlieb},
journal= {arXiv preprint arXiv:quant-ph/0506111},
year = {2009}
}
Comments
corrected version