I will start with a brief review of how the notion of quantum entanglement is uplifted from QM to QFT. Introducing various types of entanglement in the framework of QFT, the rest of the talk will be focused on a specific type which I call "entanglement in the field space". I will introduce a family of solvable scalar models and report the result of various entanglement measures in these models. I will discuss about some features of their entanglement structure and also about their possible holographic dual.
