Emergence of classical behavior from the quantum spin
Quantum Physics
2015-06-04 v1
Abstract
Classical Hamiltonian system of a point moving on a sphere of fixed radius is shown to emerge from the constrained evolution of quantum spin. The constrained quantum evolution corresponds to an appropriate coarse-graining of the quantum states into equivalence classes, and forces the equivalence classes to evolve as single units representing the classical states. The coarse-grained quantum spin with the constrained evolution in the limit of the large spin becomes indistinguishable from the classical system.
Cite
@article{arxiv.1202.2044,
title = {Emergence of classical behavior from the quantum spin},
author = {M. Radonjic and S. Prvanovic and N. Buric},
journal= {arXiv preprint arXiv:1202.2044},
year = {2015}
}