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We prove that for a strongly pseudoconvex domain \(D\subset \mathbb {C}^n\), the infinitesimal Carathéodory metric \(g_C(z,v)\) and the infinitesimal Kobayashi metric \(g_K(z,v)\) coincide if z is sufficiently close to bD and if v is sufficiently close to being tangential to bD. Also, we show that every two close points of D sufficiently close to the boundary and whose difference is almost tangential to bD can be joined by a (unique up to reparameterization) complex geodesic of D which is also a holomorphic retract of D. The same continues to hold if D is a worm domain, as long as the points are sufficiently close to a strongly pseudoconvex boundary point. We also show that a strongly pseudoconvex boundary point of a worm domain can be globally exposed; this has consequences for the behavior of the squeezing function.

Comparison of invariant metrics and distances on strongly pseudoconvex domains and worm domains