Parabolic category $\mathcal O^{\mathfrak p}$ for periplectic Lie superalgebras $\mathfrak{pe}(n)$

We provide a linkage principle in an arbitrary parabolic category $\mathcal O^{\mathfrak p}$ for the periplectic Lie superalgebras $\mathfrak{pe}(n)$. As an application, we classify indecomposable blocks in $\mathcal O^{\mathfrak p}$. We classify indecomposable tilting modules in $\mathcal O^{\mathfrak p}$ whose characters are controlled by the Kazhdan-Lusztig polynomials of type $\bf A$ Lie algebras. We establish the complete list of characters of indecomposable tilting modules in $\mathcal O^{\mathfrak p}$ for $\mathfrak{pe}(3)$.