# The Kobayashi pseudometric for the Fock-Bargmann-Hartogs domain and its application

## TL;DR

This paper explicitly computes the Kobayashi pseudometric and geodesics for certain Fock-Bargmann-Hartogs domains and applies these results to establish a boundary Schwarz lemma for holomorphic maps between such domains.

## Contribution

It provides explicit formulas for geodesics and the Kobayashi pseudometric on specific Fock-Bargmann-Hartogs domains and applies these to boundary behavior of holomorphic mappings.

## Key findings

- Explicit geodesic formulas for D_{n,1}
- Kobayashi pseudometric on D_{1,1} calculated
- Schwarz lemma at the boundary established

## Abstract

The Fock-Bargmann-Hartogs domain $D_{n,m}$ in $\mathbb{C}^{n+m}$ is defined by the inequality $\|w\|^2<e^{-\|z\|^2},$ where $(z,w)\in \mathbb{C}^n\times \mathbb{C}^m$, which is an unbounded non-hyperbolic domain in $\mathbb{C}^{n+m}$. This paper mainly consists of three parts. Firstly, we give the explicit expression of geodesics of $D_{n,1}$ in the sense of Kobayashi pseudometric; Secondly, using the formula of geodesics, we calculate explicitly the Kobayashi pseudometric on $D_{1,1}$; Lastly, we establish the Schwarz lemma at the boundary for holomorphic mappings between the nonequidimensional Fock-Bargmann-Hartogs domains by using the formula for the Kobayashi pseudometric on $D_{1,1}$.