How is it possible for a grad student to do research in any modern area of string theory like AdS/CFT or ABJM if they need to start grad school by having to learn QFT from scratch?
Is there a time-line over which this is even possible?
Or one necessarily needs to come to grad school knowing at least Polchinki level string theory to be able to understand AdS/CFT or ABJM? I mean even if one has worked through enough of Polchinki's book one is likely to stare blank at the ABJM paper. Then is it even possible for someone to get to research level with something like this if they start from basic QFT in grad school?
I would like to know what if is a practical implementation.