TL;DR
This paper explores a novel quantum gravity effective action with a reversed Euclidean Einstein sign, analyzing its implications for quantum cosmology and the potential origin of phantom scalars.
Contribution
It introduces a new effective action with a sign reversal in quantum gravity and examines its effects on WKB solutions in quantum cosmology.
Findings
Sign reversal may explain the origin of phantom scalars
Analysis of WKB solutions under the new effective action
Potential implications for cosmological models
Abstract
Using a new effective action predicted from quantum gravity where the sign of the Euclidean Einstein action is reversed we discuss WKB solutions in quantum cosmology and predict that this sign change might explain the origin of phantom scalars.
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