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<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>R</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:math> dark energy in the laboratory
We analyze the role, on large cosmological scales and laboratory experiments, of the leading curvature squared contributions to the low-energy effective action of gravity. We argue for a natural relationship ${c}_{0}{\ensuremath{\lambda}}^{2}\ensuremath{\simeq}1$ at low energy between the ${\mathcal{R}}^{2}$ coefficients ${c}_{0}$ of the Ricci scalar squared term in this expansion and the …