The Null Energy Condition and its violation
High Energy Physics - Theory
2015-06-18 v2 General Relativity and Quantum Cosmology
Abstract
We give a mini-review of scalar field theories with second-derivative Lagrangians, whose field equations are second order. Some of these theories admit solutions violating the Null Energy Condition and having no obvious pathologies. We give a few examples of using these theories in cosmological setting and also in the context of the creation of a universe in the laboratory.
Keywords
Cite
@article{arxiv.1401.4024,
title = {The Null Energy Condition and its violation},
author = {V. A. Rubakov},
journal= {arXiv preprint arXiv:1401.4024},
year = {2015}
}
Comments
Mini-review, prepared for Physics Uspekhi, references added