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arXiv · 1401.4024

The Null Energy Condition and its violation

V. A. Rubakov
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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.

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V. A. Rubakov. 2014-02-25. The Null Energy Condition and its violation. https://doi.org/10.3367/ufne.0184.201402b.0137

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