When Form 1041 Qft Ii 2023-2024

Thank you. Let's see, how do you turn this on? Thank you. I'm faced with a little bit of an impossible task, as most of you realize, in two different ways. First of all, quantum field theory is an extraordinarily rich subject and so there's no way for me to give you four lectures. There's no way for me to explain quantum field theory to you and, in fact, the best I can do is probably to give you just a flavor of the subject. Secondly, before I came, I had no idea what the levels of the students would be, except that they are very different. And the organizers told me that it'll be also completely different. So what I want to do, so my plan is the following: I'm going to give, as an opening lecture today, instead of a formal sort of launching into the details of quantum field theory immediately, which I think is not what some of the students may want because I understand some of you are still learning quantum mechanics, but what I'm going to give you is a colloquium that I've given at several places in the United States, several universities, on quantum field theory. And I then will follow that, either today or tomorrow, with some lectures on scalar field theory. And then, after I got through a little bit of scalar field theory, now have a better of a sense, hopefully from the questions and so on, how we're doing and we'll move on from there. Okay, so, this is a colloquium on the nature of quantum field theory. So let us start by asking, what is quantum field theory and who needs quantum field theory? Is that clear? Okay, so in our rather cynical age, you don't really go...