  We study "field space entanglement" in certain quantum field theories
consisting of N number of free scalar fields interacting with each other via
kinetic mixing terms. We present exact analytic expressions for entanglement
end Renyi entropies between arbitrary number of scalar fields by which we could
explore certain entanglement inequalities. Other entanglement measures such as
mutual information and entanglement negativity have also been studied. We also
give some comments about possible holographic realizations of such models.
