Article ID Journal Published Year Pages File Type
1848949 Physics Letters B 2015 4 Pages PDF
Abstract

We show that effective theories of matter that classically violate the null energy condition cannot be minimally coupled to Einstein gravity without being inconsistent with both string theory and black hole thermodynamics. We argue however that they could still be either non-minimally coupled or coupled to higher-curvature theories of gravity.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics
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