Radiative friction on an excited atom moving in vacuum
Quantum Physics
2012-05-01 v1
Abstract
It is known that, when an excited atom spontaneously emits one photon, two effects are produced. First, the atom's internal and external states are entangled with the states of the emitted photon. Second, the atom receives a momentum transfered from the photon. In this work, the dynamics of such an atom in vacuum is studied. Through a specific calculation, it is demonstrated that these effects cause the atom to experience, on average, a friction force opposite to its initial velocity. Properties of the force are also discussed.
Keywords
Cite
@article{arxiv.1204.6646,
title = {Radiative friction on an excited atom moving in vacuum},
author = {Wei Guo},
journal= {arXiv preprint arXiv:1204.6646},
year = {2012}
}
Comments
6 pages