# Math or Physics

I'm a Master Math Student And I'm very interested in Some fields in Physics Like Cosmology. I even Considered Changing my field and Apply for physics(Cosmology) but wasn't really possible (my professors told me it will be risky to apply for Physics PhD), then I thought I could continue my Math studding, and Have my own Math approach to this problems in physics like studding Geometry or Stochastic ... but recently I've heard a lot that these advance field of mathematics aren't really very useful for physics and most of physicians don't believe in using these kind of math. is it possible to do something interdisciplinary in PhD ? or I really should try to change my field 'cause I love math but it was the desire to knowing the world which lead me to studding math .

Physical cosmology today is dominated by statistics on the $\Lambda$CDM model. The astronomers involved are very keen on looking for anisotropies in the cosmic microwave background and searching for other clues of large-structure formation. What this means to you, a mathematician, is that people are mostly interested in looking at cross-correlations on two-point statistics.