A Kobayashi-Hitchin correspondence for $I_{\pm }$-holomorphic bundles

In this paper, we introduce the notions of $\alpha$-Hermitian-Einstein metric and $\alpha$-stability for $I_{\pm }$-holomorphic vector bundles on bi-Hermitian manifolds. Moreover, we establish a Kobayashi-Hitchin correspondence for $I_{\pm }$-holomorphic vector bundles on bi-Hermitian manifolds. Examples of such vector bundles include generalized holomorphic bundles on generalized K"ahler manifolds. We also show that $\alpha$-stability of a vector bundle, in this sense, can depend on the parameter $\alpha$.