  The Goresky-Hingston coproduct was first introduced by D. Sullivan and later
extended by M. Goresky and N. Hingston. In this article we give a Morse
theoretic description of the coproduct. Using the description we prove homotopy
invariance property of the coproduct. We describe a connection between our
Morse theoretic coproduct and a coproduct on Floer homology of cotangent
bundle.
