James Unwin

An intermediate scale R-axion & the QCD axion

A bstract An intermediate scale R-axion faces an immediate obstruction from the Dine-Festuccia-Komargodski (DFK) bound on the superpotential, 2|⟨ W ⟩| ≤ f R F , since for a nearly Minkowski vacuum it typically follows that f R ≳ M Pl . We show that this lower bound on f R can be...