On Exponential Instability of an Inverse Problem for the Wave Equation

Leonard Busch, Matti Lassas, Lauri Oksanen +1

For a time-independent potential $q\in L^{\infty }$, consider the source-to-solution operator that maps a source $f$ to the solution $u=u(t,x)$ of $(\square +q)u=f$ in Euclidean space wit…