  Boundary conformal field theory (BCFT) and interface conformal field theory
(ICFT) attract attention in the context of the information paradox problem. On
this background, we develop the idea of the reflected entropy in BCFT/ICFT. We
first introduce the left-right reflected entropy (LRRE) in BCFT and show that
its holographic dual is given by the area of the entanglement wedge cross
section (EWCS) through AdS/BCFT. We also present how to evaluate the reflected
entropy in ICFT. By using this technique, we can show the universal behavior of
the Markov gap in some special cases. Furthermore, we clarify what is the
holographic dual of boundary primary correlation functions by using this
LRRE/EWCS duality.
