Wormholes exact solutions in high dimensions General Relativity

Abstract

In the present work, we develop and examine a series of exact solutions to Einstein's 5-dimensional field equations in the vacuum, which depend on two constant parameters, $p$ and $q$, which generalize the solutions of Lü and Mei [8] belonging to our class $p=2$. This category of solutions can be split into two sections: when $p$ is odd, it represents a compact object that may have naked singularities. However, the intriguing outcome occurs when $p$ is even, as asymptotically Ricci flat wormholes emerge in this scenario. The Kreschman invariant of these solutions depends on the constant parameter $l=1+\frac{3q^2-p^2}{4}$. When $l=0$ and $l\le -\frac{1}{2}$, the solutions are regular. For the specific cases where $l\le 0$, or $l>0$ such that $q<0$ for $p\ge 2$, $q\le \frac{1}{3}$ for $p=2$, and $q\le \frac{1+\sqrt{2}}{3}$ for $p\ge 4$, this class of wormholes adheres to Wormhole Cosmic Censorship, implying that the throat effectively obscures all causal anomalies and singularities. In our analysis, we investigated the embedded geometry, geodesics, singularities, potential event horizons, ergoregions, and the wormhole throat.