Varieties with Ulrich exterior powers of the tangent bundle

Abstract

We study smooth polarized projective varieties $(X,H)$ whose exterior powers of the tangent bundle are Ulrich. We prove that if ${\bigwedge }^r{T}_X$ is $H$-Ulrich for some $0<r<\dim X$, then $X$ is Fano and the intersection number $(-K_X)\cdot H^{n-1}$ is determined explicitly. We then classify the Picard number one case: the only example is the Veronese surface $({\mathbb{P}}^2,{\mathcal{O}}_{{\mathbb{P}}^2}(2))$.

19 pages