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The Null Energy Condition and its violation

 a, b
a Institute for Nuclear Research, Russian Academy of Sciences, Moscow, Russian Federation
b Department of Physics, Lomonosov Moscow State University, Moscow, Russia

A brief review is given of scalar field theories with second-derivative Lagrangians yielding second order field equations. Some of these theories admit solutions that violate the Null Energy Condition but which otherwise show no obvious inconsistencies. The use of these theories in constructing cosmological scenarios and in the context a laboratory-created universe is illustrated with examples.

Text can be downloaded in Russian. English translation is available here.
Fulltext: pdf (770 KB)
PACS: 04.20.Dw, 04.62.+v, 98.80.Bp (all)
DOI: 10.3367/UFNe.0184.201402b.0137
URL: http://ufn.ru/en/articles/2014/2/b/
Citation: Rubakov V A "The Null Energy Condition and its violation" Phys. Usp. 57 128–142 (2014)
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Received: 10th, January 2014, 10th, January 2014

Оригинал: Рубаков В А «Изотропное условие энергодоминантности и его нарушение» УФН 184 137–152 (2014); DOI: 10.3367/UFNr.0184.201402b.0137

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