You have to be kidding right ?u can pursue MS in any branch of physics.
dat was a bit rude, physiker and really demotivating.Bare in mind, you are not the only one who has an interest in Physics, but having an interest is something and working with actual physics research is something else.
That was something like 90 years ago, the way things work is a bit different now. And you probably aren't Dirac. Not to say it can't be done , but it is difficult.On a side note, I should mention that Dirac did Electrical engineering then went on to Mathematics, and Wigner did Chemical engineering.