A "toy" model in QFT with no lower bound to the energy
Quantum Physics
2009-03-15 v2
Abstract
In quantum field theory, it is generally assumed that there is a lower bound to the energy, which is normally assumed to the the vacuum state. While this may be a reasonable assumption for a free field it is not necessarily the case for interacting fields. In this paper I will examine a "toy" model of a neutral scalar field interacting with a charged scalar field and show that there is no lower bound to the energy in this case.
Cite
@article{arxiv.0903.0426,
title = {A "toy" model in QFT with no lower bound to the energy},
author = {Dan Solomon},
journal= {arXiv preprint arXiv:0903.0426},
year = {2009}
}
Comments
Minor editorial changes