What % of Physics students ultimately learn quantum field theory?

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Discussion Overview

The discussion revolves around the percentage of physics students who ultimately learn quantum field theory (QFT), with a focus on the requirements and options available in various academic programs. It touches on the differences in curriculum for undergraduate and graduate students, as well as personal experiences related to course selection.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants note that QFT is not a requirement in all PhD programs, with one mentioning it as a pass/fail course at their institution.
  • One participant suggests that very few undergraduates learn QFT in depth, indicating that while they can learn to manipulate Feynman diagrams, true understanding requires significantly more effort.
  • Another participant asserts that, to a first approximation, all PhD students engage with QFT.
  • There is a question raised about whether the same can be said for graduate-level general relativity (GR), with a response suggesting that this is unlikely due to the broader application of QFT in various subfields.
  • A participant shares their experience of being limited in course options during their studies, emphasizing the importance of carefully reviewing program offerings to ensure they align with personal interests and research goals.
  • Concerns are expressed about the influence of industry demands on course selection, suggesting that programs may prioritize topics that yield immediate returns over those that are more intellectually stimulating.

Areas of Agreement / Disagreement

Participants express differing views on the prevalence of QFT education among physics students, particularly between undergraduates and PhD candidates. There is no consensus on the necessity of QFT in graduate programs or the impact of industry on course offerings.

Contextual Notes

Limitations include the lack of specific data on the percentage of students learning QFT across different institutions and the subjective nature of course selection experiences shared by participants.

Simfish
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It's not a requirement at my school's Physics PhD program (it's a graduate-level pass/fail course), so I'm curious as to whether or not other schools have the requirement, and how many students ultimately opt to take it.
 
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Undergrads? Probably a very small fraction, except in the most superficial way. I can teach undergrads to manipulate Feynman diagrams, but to really understand what's going on takes substantially more time and effort.

PhD's? To first order, all of them.
 
Vanadium 50 said:
PhD's? To first order, all of them.

I wonder could you say the same for graduate GR?
 
Almost certainly not. QFT is used in many subfields, unlike GR.
 
It wasn't an option in the (UK) course I took - I was forced to study medical, solid state, and nuclear for advanced options (yawn). In my astronomy MSc I had to demand to do a cosmology project - to learn some GR. If you want your course to get you to the frontiers of knowledge, check out the options very carefully before you apply! Modern capitalist society wants most physicists to take courses that will generate immediate returns in industry, not those that pique your interest most... Be careful even if there seems a wide choice on paper. I read an article that Cambridge were limiting the numbers who could choose the "sexy" options. So be careful even if the options are there on paper...
 

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