Hi there, I am currently studying Quantum Field Theory (well, for about 3 weeks isch), and it's really interesting and good fun! However, I would like to know how QFT relates Integrable QFT... I don't really know what it is. Can anyone tell me (i) The theoretical background of Integrable QFT (ii) The relationship between these two field theories (iii) What's the most interesting part of Integrable QFT (in your opinion) (iv) The Ising Model (I have read some papers about it, but I don't really understand what's going on there in details!!) (v) In which direction is integrable QFT going in recent development? Thank you!