  Quantum field theory can be a new medium for communication through quantum
energy teleportation. We performed a demonstration of quantum energy
teleportation with a relativistic fermionic field theory of self-coupled
fermions, called the massive Thirring model. Our results reveal that there is a
close relation between the amount of energy teleported and the phase diagram of
the theory. In particular, it is shown that the teleported energy peaks near
the phase transition points. The results provide new implications for phase
diagrams of field theory in terms of quantum communication and quantum
computing.
