I'm currently an undergraduate physics major in my final year at a US institution; I've recently finished applying to physics graduate schools for theory. With one of the schools in particular, I'm facing a bit of a dilemma:
Within said school there is a professor who is very well known and well regarded within the field of my utmost interest. What's more, said professor is still doing interesting research within this field and as such I would love to work with them, especially given that this field tends not to have dedicated research in many US departments.
But at the same time, this professor also does research in a non-mainstream, but not to say crackpot, field. That is, it's perfectly legitimate research but it's not mainstream. There are very few people in the US working on this particular subject and it's often looked down upon by people working in its much more mainstream competitor. While I think the subject itself is pretty cool to learn, I don't want to work in it by any means.
As such, do you think it would be potentially harmful for post-doc applications or general physics academia related career goals if I end up working for this professor? Would working for said professor also associate me with the non-mainstream work, even though I don't want to involve myself in it whatsoever? Would there necessarily be any kind of negative impact?
Thank you all very much in advance!