Question like this is highly irrelevant. That's like asking if it is possible if your child can grow up and become a multi-billionaire. OF COURSE it is possible! The statistical phase space for it is not zero!Is it possible to do a Masters in Condensed Matter theory and then a PhD in high energy physics?
First of all, let me point out that I am talking about masters programs in Canada.Secondly, why would someone want to take a circuitous route to doing a PhD in HEP by first doing a MSc in another area of physics? Thirdly, what is prompting someone to switch in mid-stream?
My problem is in finding a professor who would want to supervise me in high energy theory. I'm thinking of self-studying the high energy theory courses by myself and become familiar with the landscape of high energy theory research by reading journal articles.If you are going straight to a PhD program (like in the US), no one cares about your masters. If you take a certain number of classes, you'll get a masters, if you don't then you won't. So you should take classes relevant to what you will be doing your PhD in.
If I want to do holography, must I not have my supervisor already working in holography?You need two semesters of QFT, and if you want to do holography, which people do from both HET and CMT backgrounds nowadays, you will need GR.
I presume you are referring to this paper by Cumrun Vafa: http://arxiv.org/abs/1511.03372 ?The other thing to note is that a lot of people in HET have started to become interested in CMT over the past decade. For example,there is a professor famous in string theory who just wrote a paper on the fractional quantum Hall effect.
Does it work the other way around - CMT people working in HEP? Or does it depend on research trends?Additionally, many people who are/where string theorists or in quantum gravity have been studying CM systems using the holographic correspondence. There are a lot of holography postdocs I know who did their PhD in HET but their postdoc working more with CMT people.