Geometric study of non-constant vector fields making hyperbolic space Ricci-Bourguignon solitons

Abstract

The objective of this paper is to deepen the study of vector fields on hyperbolic spaces ${\mathbb{H}}^n$ that transform them into a Ricci-Bourguignon soliton. Starting from a recent work in \cite{bousso2025ricci} which characterizes these fields as Killing fields of a specific shape, we propose a detailed geometric study of their structure and behavior in the dimensions $n=2,3$ and $n\ge 3$. In odd dimension we show that the dual form of these vectors are contact forms. This work aims to enrich the understanding of self-similar solutions of the Ricci flow in a more general context.