This blog post is going to introduce what QFT is about, then move on to one of the simplest fields - the Klein-Gordon Field, a real scalar field - and the quantization of that field. But, QFT gets kind of abstract, so I'm not making any promises! As always, I will try to write around the math in such a way that it's not really needed to understand the equations and still get something interesting out of it. This three to four part blog series is me getting refreshed with some basic Quantum Field Theory (QFT) topics, but hopefully written in a way that makes it interesting to others, as well. Unfortunately, it's easy to forget some of the math during the off periods, so a little refresher is needed to get me going again. So, it's been an on-again, off-again kind of thing for the past 15+ years. With an already busy schedule, it's hard to dedicate the time it takes to master the material. As some of you may know I like to study physics in my spare time, but doing it as a hobby can be challenging. 49.4k 3 3 gold badges 51 51 silver badges 155 155 bronze badges $endgroup$ Not the answer you're looking for? Browse other questions tagged quantum-mechanicsspecific-referenceangular-momentumhistoryharmonic-oscillator or ask your own question.
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