Here are my solutions to various problems in the textbook Quantum Field Theory for the Gifted Amateur, by Tom Lancaster and Stephen J. Blundell (Oxford University Press, 2014). Obviously I can’t offer any guarantee that all the solutions are actually correct, but I’ve given them my best shot.
These solutions are the only ones that I’ve worked out so far, so please don’t ask me to post “the rest of the chapters” as I haven’t worked on those yet. I will get to them eventually.
Chapter 1 – Lagrangians
Chapter 2 – Simple harmonic oscillators
Chapter 3 – Occupation number representation
Chapter 4 – Making second quantization work
- 4.1 Field operators for the infinite square well
- 4.2 Second quantizing a single-particle operator
- 4.2 Second quantizing operators – examples
- 4.3 Second quantizing the tight-binding hamiltonian