Optimizing adiabaticity in quantum mechanics
Quantum Physics
2013-02-07 v1
Abstract
A condition on the Hamiltonian of a time-dependent quantum mechanical system is derived which, if satisfied, implies optimal adiabaticity (defined below). The condition is expressed in terms of the Hamiltonian and in terms of the evolution operator related to it. Since the latter depends in a complicated way on the Hamiltonian, it is not yet clear how the condition can be used to extract useful information about the optimal Hamiltonian. The condition is tested on an exactly-soluble time-dependent problem (a spin in a magnetic field), where perfectly adiabatic evolution can be easily identified.
Keywords
Cite
@article{arxiv.1109.2565,
title = {Optimizing adiabaticity in quantum mechanics},
author = {R. MacKenzie and M. Pineault and L. Renaud-Desjardins},
journal= {arXiv preprint arXiv:1109.2565},
year = {2013}
}
Comments
5 pages, 2 figures