Cut Finite Element Methods for Coupled Bulk-Surface Problems
  We develop a cut finite element method for a second order elliptic coupled bulk-surface model problem. We prove a priori estimates for the energy and $L^2$ norms of the error. Using stabilization terms we show that the resulting algebraic system of equations has a similar condition number as a standard fitted finite element method. Finally, we present a numerical example illustrating the accuracy and the robustness of our approach. 
Erik Burman and Peter Hansbo and Mats G. Larson and Sara Zahedi
math.NA