On the strong coupling of Einsteinian Cubic Gravity and its generalisations

Abstract

In this note we discuss the strong coupling issues inherent to the defining requirement for the so-called Einsteinian Cubic Gravity and its quasi-topological generalisations.

arXiv comment14 pages, 4 figures, 1 table

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• Stability of non-degenerate Ricci-type Palatini theories
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• A unified geometric description of the Universe: from inflation to late-time acceleration without an inflaton nor a cosmological constant
• $f(T)$ Gravity: Background Dependence and Propagating Degrees of Freedom
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• Dimensional aspects of Lovelock-Lanczos gravity
• Braneworlds in Warped Einsteinian Cubic Gravity
• Cosmological Weyl-Einsteinian-Cubic Gravity as a Gauge Theory of Gravity
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• Vulnerability of f(Q) gravity theory and a possible resolution