High-frequency stability estimates for the linearized inverse boundary value problem for the polyharmonic operator with constant attenuation

In this article, we explore high-frequency stability estimates for the determination of the zeroth-order perturbation of the polyharmonic operator with constant attenuation from the linearized partial Dirichlet-to-Neumann map when part of the boundary of the domain is inaccessible and flat. Our result suggests improvement of the stability when the frequency is appropriately chosen. This work extends the results of [17], [29], [19], [8] and [28] to the case of polyharmonic operator with constant attenuation and with lower regularity assumption on the potentials.