Timeline for What is the 'state space' of a quantum field theory called?
Current License: CC BY-SA 4.0
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| Nov 15, 2022 at 23:29 | answer | added | Andrew Steane | timeline score: 2 | |
| Jul 29, 2018 at 18:01 | history | tweeted | twitter.com/StackPhysics/status/1023629599039741953 | ||
| Jul 29, 2018 at 14:32 | history | edited | user183966 | CC BY-SA 4.0 |
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| Jul 29, 2018 at 11:59 | history | edited | user183966 | CC BY-SA 4.0 |
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| Jul 29, 2018 at 11:46 | history | edited | Qmechanic♦ | CC BY-SA 4.0 |
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| Jul 29, 2018 at 11:24 | comment | added | user183966 | @knzhou thank you very much for this comment. This is actually very close to my experience, we learned some calculations in the quantum field theory classes but I felt (like some of my classmates) that the conceptual detail was not explored very thoroughly. This gives me a new perspective, I should probably study basic quantum mechanics more first. | |
| Jul 29, 2018 at 11:18 | comment | added | knzhou | After I finished 4 year degree with several classes in quantum field theory, I realized I had misunderstood a lot of it, tossed out my notes, and started over from the basics. (By which I mean, I took the whole sequence_ again_ at another university.) The fact is that QFT is a big big jump up from undergrad physics, there are a lot of moving parts, and it's easy to walk away with almost no conceptual understanding despite having the ability to calculate cross sections. In particular, every conceptual error you had lurking from QM will come to haunt you tenfold when you try QFT. | |
| Jul 29, 2018 at 11:12 | comment | added | user183966 | @knzhou I don't take any offence. I'm sorry for my badly founded questions. I have done a 4 year masters degree in maths & physics, specialising in particle theory, at a good UK university that specialises in particle theory, getting a fairly good grade. My problem is I guess that I don't know where my misconceptions lie. Honestly I suspect incorrect terminology is a large part of the confusion. | |
| Jul 29, 2018 at 11:07 | history | edited | user183966 | CC BY-SA 4.0 |
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| Jul 29, 2018 at 10:59 | comment | added | knzhou | No offense, but I think you should learn standard quantum mechanics, out of a good undergraduate book, before trying to tackle QFT. You've asked a lot of QFT questions that indicate misconceptions in basic QM, and if you try to continue this way progress will be basically impossible. | |
| Jul 29, 2018 at 10:56 | answer | added | ACuriousMind♦ | timeline score: 5 | |
| Jul 29, 2018 at 10:53 | comment | added | user183966 | @knzhou Thank you. So if I want to say "Hilbert space of a particle field" or "Hilbert space of a quantum field", there is no term for this? I just have to write that out in full? Also if I talk about an alternate theory where the state object does not actually have Hilbert structure, I will have to write "Object equivalent to the Hilbert space of the particle field if it were standard QFT"? | |
| Jul 29, 2018 at 10:49 | comment | added | knzhou | It's just a Hilbert space. Like in undergrad QM. | |
| Jul 29, 2018 at 10:44 | history | asked | user183966 | CC BY-SA 4.0 |