Causality Constrains Higher Curvature Corrections to Gravity

Details Causality Constrains Higher Curvature Corrections to Gravity Causality Constrains Higher Curvature Corrections to Gravity

2006-12-04

arxiv.org/abs/hep-th/0612015v1

Class.Quant.Grav.24:3521-3524,2007

Physics

High Energy Physics

High Energy Physics - Theory

5 pages

Scientific paper

10.1088/0264-9381/24/13/N02

We show that causality constrains the sign of quartic Riemann corrections to
the Einstein-Hilbert action. Our constraint constitutes a restriction on
candidate theories of quantum gravity.

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