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We consider a dark energy scenario driven by a scalar field $\phi$ with apseudo Nambu Goldstone boson (pNGB) type potential $V(\phi)=\mu^4 \left( 1+{\rm cos}(\phi/f) \right)$. The pNGB originates out of breaking of spontaneoussymmetry at a scale $f$ close to Planck mass $M_{\rm{pl}}$. We consider twocases namely the quintessence dark energy and the other, where the standardpNGB action is modified by the terms related to Slotheon cosmology. Wedemonstrate that for this pNGB potential, high-$f$ problem is better addressedwhen interaction between dark matter and dark energy is taken into account andthat Slotheon dark energy scenario works even better over quintessence in thisrespect. To this end, a mass limit for dark matter is also estimated.

Addressing the High-$f$ Problem in Pseudo-Nambu-Goldstone Boson Dark Energy Models with Dark Matter - Dark Energy Interaction