Energy conditions in the Jordan frame

Saugata Chatterjee, Damien Easson, Maulik Parikh

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


The null energy condition, in its usual form, can appear to be violated by transformations in the conformal frame of the metric. We propose a generalization of the form of the null energy condition to the Jordan frame, in which matter is non-minimally coupled, which reduces to the familiar form in the Einstein frame. Using our version of the null energy condition, we provide a direct proof of the second law of black hole thermodynamics in the Jordan frame.

Original languageEnglish (US)
Article number235031
JournalClassical and Quantum Gravity
Issue number23
StatePublished - Dec 7 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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