  A study of the top quark interactions via flavour-changing neutral current
(FCNC) processes provides an intriguing connection between the heaviest
elementary particle of the standard model (SM) of particle physics and the new
scalar bosons that are predicted in several notable SM extensions. The
production cross sections of the processes with top-scalar FCNC interactions
can be significantly enhanced to the observable level at the CERN Large Hadron
Collider. The present review summarizes the latest experimental results on the
study of the top quark interactions with the Higgs boson via FCNC and describes
several promising directions to look for new scalar particles.
