On the Gromov hyperbolicity of the minimal metric

Abstract In this paper, we study the hyperbolicity in the sense of Gromov of domains in Rᵈ R d (d 3) (d ≥ 3) with respect to the minimal metric introduced by Forstnerič and Kalaj (Anal PDE 17 (3): 981–1003, 2024). In particular, we prove that every bounded strongly minimally convex domain is Gromov hyperbolic and its Gromov compactification is equivalent to its Euclidean closure. Moreover, we prove that the boundary of a Gromov hyperbolic convex domain does not contain non-trivial conformal harmonic disks. Finally, we study the relation between the minimal metric and the Hilbert metric in convex domains.