Ghost-free higher-derivative theory
High Energy Physics - Theory
2008-11-26 v1
Abstract
We present an example of the quantum system with higher derivatives in the Lagrangian, which is ghost-free: the spectrum of the Hamiltonian is bounded from below and unitarity is preserved.
Keywords
Cite
@article{arxiv.hep-th/0503213,
title = {Ghost-free higher-derivative theory},
author = {A. V. Smilga},
journal= {arXiv preprint arXiv:hep-th/0503213},
year = {2008}
}
Comments
13 pages, 1 figure