$t$-Gauduchon Ricci-flat metrics on non-K\"{a}hler Calabi-Yau manifolds

TL;DR

This paper constructs new examples of $t$-Gauduchon Ricci-flat metrics on non-K"ahler Calabi-Yau manifolds, expanding the understanding of special Hermitian metrics in complex geometry.

Contribution

It introduces novel $t$-Gauduchon Ricci-flat metrics on specific non-K"ahler Calabi-Yau manifolds, including detailed examples involving principal torus bundles.

Findings

New $t$-Gauduchon Ricci-flat metrics for all $t<1$ on certain manifolds.

Explicit examples of Strominger-Bismut Ricci-flat Hermitian metrics.

Descriptions of balanced Hermitian metrics on principal $T^{2}$-bundles.

Abstract

We construct new examples of $t$-Gauduchon Ricci-flat metrics, for all $t<1$, on compact non-K\"{a}hler Calabi-Yau manifolds defined by certain principal torus bundles over rational homogeneous varieties with Picard number $\varrho(X) > 1$. As an application, we provide a detailed description of new examples of Strominger-Bismut Ricci-flat Hermitian metrics, Lichnerowicz Ricci-flat Hermitian metrics, and balanced Hermitian metrics on principal $T^{2}$-bundles over the Fano threefold ${\mathbb{P}}(T_{{\mathbb{P}^{2}}})$.