Higher-order evolution inequalities with Hardy potential on the Korányi ball

We consider a higher order in (time) semilinear evolution inequality posed on the Korányi ball under an inhomogeneous Dirichlet-type boundary condition. The problem involves an inverse-square potential $\lambda \mathrm{/}\mathrm{\mid }\xi {\mathrm{\mid }}_{\mathbb{H}}^2$, where $\lambda \ge -(Q-2{)}^2\mathrm{/}4$ and a general weight function $V$ depending on the space variable in front of the power nonlinearity. We first establish a general nonexistence result for the considered problem. Next, in the special case $V(\xi ):=\mathrm{\mid }\xi {\mathrm{\mid }}_{\mathbb{H}}^a$, $a\in \mathbb{R}$, we prove the sharpness of our nonexistence result and show that the problem admits three different critical behaviors according to the value of the parameter $\lambda$.