Too late to get into string theory/QFT?

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Discussion Overview

The discussion revolves around the concerns of a graduate student entering physics regarding their preparedness for advanced topics such as Quantum Field Theory (QFT) and string theory. Participants explore the implications of their current mathematical background and previous coursework on their ability to succeed in these areas, as well as strategies for catching up on necessary knowledge.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification
  • Homework-related

Main Points Raised

  • One participant expresses concern about their lack of pure math courses and whether it is too late to pursue QFT or string theory, given their limited background in physics and mathematics.
  • Another participant reassures that it is not too late and emphasizes the importance of self-learning during graduate school, suggesting that students can pick up necessary knowledge along the way.
  • Some participants highlight the competitive nature of securing a research position in QFT or string theory, noting that many peers may have more extensive backgrounds in math and physics.
  • There is a suggestion to engage with potential research mentors early and to familiarize oneself with their work to prepare for discussions.
  • One participant advises considering long-term career goals and exploring fields with more industry demand, such as condensed matter theory, which also involves QFT.
  • Another participant questions the perception that all theoretical physics students are exceptionally advanced, arguing that familiarity with proof-based courses is sufficient for success.
  • Concerns are raised about the need to master undergraduate physics and prepare for graduate-level courses before school starts, with a focus on balancing this with advanced math preparation.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether the initial concerns about preparedness are valid. While some argue that it is not too late and emphasize self-learning, others express doubts about competition and the necessity of a stronger math background.

Contextual Notes

Participants mention the importance of specific research groups and mentors at their institutions, indicating that opportunities may vary based on available faculty and research interests. There is also a recognition of the competitive landscape among graduate students.

Who May Find This Useful

Graduate students entering physics programs, particularly those interested in theoretical physics, QFT, or string theory, may find this discussion relevant as they navigate their academic paths and prepare for advanced studies.

creepypasta13
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I start grad school this fall in physics, but given my lack of pure math courses, is it too late at this point to get into QFT or string theory? (I've only taken proof-based Fourier and real analysis, along with linear algebra. For physics, I haven't even taken undergrad Particle physics or any grad courses yet) I imagine that a lot of the incoming theory students have already taken a lot more physics and math than me

Or would it suffice if I got A's (or close to top of the class) in grad-level Electrodynamics and Quantum mechanics this fall?

Also, if its not too late, how can someone like me pick up the necessary math? Would I have to self-teach myself all of it?
 
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creepypasta13 said:
I start grad school this fall in physics, but given my lack of pure math courses, is it too late at this point to get into QFT or string theory? (I've only taken proof-based Fourier and real analysis, along with linear algebra. For physics, I haven't even taken undergrad Particle physics or any grad courses yet) I imagine that a lot of the incoming theory students have already taken a lot more physics and math than me

Or would it suffice if I got A's (or close to top of the class) in grad-level Electrodynamics and Quantum mechanics this fall?

Also, if its not too late, how can someone like me pick up the necessary math? Would I have to self-teach myself all of it?

Of course it is not late at all. Start with these useful notes :-) You pick up what is necessary along the way as and when necessary. Self-learning is a part (a large part of!) graduate school. But there should be QFT courses that you can take officially.

http://www.damtp.cam.ac.uk/user/tong/qft.html

http://www.damtp.cam.ac.uk/user/tong/string.html
 
yenchin said:
Of course it is not late at all. Start with these useful notes :-) You pick up what is necessary along the way as and when necessary. Self-learning is a part (a large part of!) graduate school. But there should be QFT courses that you can take officially.

http://www.damtp.cam.ac.uk/user/tong/qft.html

http://www.damtp.cam.ac.uk/user/tong/string.html

Maybe 'too late' isn't the concern as much as whether I can even get into a research group in QFT or string theory at all? I think students here are expected to get into a research group by the end of their 2nd year, and of course, there's lots of competition for the few slots available. Most of my competitors probably have already taken lots of proof-based math and/or grad-level physics.
 
creepypasta13 said:
Maybe 'too late' isn't the concern as much as whether I can even get into a research group in QFT or string theory at all? I think students here are expected to get into a research group by the end of their 2nd year, and of course, there's lots of competition for the few slots available. Most of my competitors probably have already taken lots of proof-based math and/or grad-level physics.

This is mainly a function of whether or not there's a person/group at your institution that does the kind of research you're interested in. If there is, well then as soon as you can, arrange to go meet with him or her and discuss your situation.

Between now and then, the best thing you can do is probably just to read up on the areas which interest you, especially string theory as this one is less accessible. If possible, find out what specific research your mentor is interested in and try to read some of his or her papers so that you can have an intelligent conversation.

You seem to have the impression that everyone that studies theoretical physics is a prodigy who took all graduate physics courses as an undergrad, has a complete mastery of mathematics, and probably already knows a lot about string theory. I don't think this is the case, and having taken at least some proof based courses is the most important part. As long as you're familiar with the language and methodology of modern mathematics, you can pick things up on your own. At any rate, I wouldn't worry about it much. Just talk to who you want to work with when you get the chance.
 
Just a brief bit of advice- on top of thinking about getting into string/QFT you should also ask yourself "what are my long term goals?"

If your goal is to eventually land a paying job doing scientific research, you might want to look at something with more industry demand. Condensed matter theory also requires a great deal of quantum-field-theory, but if you study silicon you can get a good job doing science if the academic route doesn't work out.

Ask any prospective advisor what their former students are doing. If most of them work in finance or insurance, that's the likely path for you as well. Ask any older graduate students in the group what their job prospects are like.
 
Nabeshin said:
Between now and then, the best thing you can do is probably just to read up on the areas which interest you, especially string theory as this one is less accessible. If possible, find out what specific research your mentor is interested in and try to read some of his or her papers so that you can have an intelligent conversation.

You seem to have the impression that everyone that studies theoretical physics is a prodigy who took all graduate physics courses as an undergrad, has a complete mastery of mathematics, and probably already knows a lot about string theory. I don't think this is the case, and having taken at least some proof based courses is the most important part. As long as you're familiar with the language and methodology of modern mathematics, you can pick things up on your own. At any rate, I wouldn't worry about it much. Just talk to who you want to work with when you get the chance.

I know not everyone is a prodigy. I just figured the competition is stiff for the few openings, and the other students will have already taken a lot more math and physics than I completed during my undergrad.

Besides reading about their research, what else should I do during my time until school starts? Master my undergrad physics and just get a head-start on grad-level EM and QM, and not worry about the advanced math yet?
 

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