Stick, a Galvin ultrafilter, and failure of SCH

Determine whether it is consistent that a cardinal \(\lambda\) is supercompact, a normal ultrafilter \(\mathscr U\) on \(\lambda\) satisfies \({\rm Gal}(\mathscr U,\lambda^+,\lambda^+)\), the stick principle \(\clubsuit(\lambda)\) holds, and \(2^\lambda>\lambda^+\).

Background

The paper shows that the stick principle (λ)\clubsuit(\lambda) implies the desired negative partition relation. It discusses forcing (λ)\clubsuit(\lambda) while increasing 2λ2^\lambda, and separately describes a Galvin-type property for a normal ultrafilter that can preserve stick or tiltan through Prikry-type forcing.

The unresolved issue is whether these ingredients can be forced together: supercompactness, the Galvin ultrafilter property, stick at λ+\lambda^+, and failure of SCH at λ\lambda.

References

There are also several ways to force stick or tiltan at a supercompact cardinal \lambda while increasing 2\lambda above \lambda+. We do not know, however, to force these two things together: Is it consistent that \lambda is supercompact, \mathscr{U} is a normal ultrafilter over \lambda satisfying {\rm Gal}(\mathscr{U},\lambda+,\lambda+), (\lambda) holds and 2\lambda>\lambda+?

On a problem of Erdos and Hajnal  (2502.16625 - Garti et al., 23 Feb 2025) in Question 3.1 (labelled qstick), Section 3, final paragraph