There is a few study on that, and in the case of the USA, it is for *scientist* (not only physicist) a 40-40 things , the rest being undecided.
http://findarticles.com/p/articles/mi_m1355/is_n22_v91/ai_19332942/
The things is, it does not seem to be extrapolatable to all country, as a similar study I remember there were more atheism physicist in sweden and less in italy/spain in percentage. I can't find it anymore in google, and can't be bothered.
There is a few study on that, and in the case of the USA, it is for *scientist* (not only physicist) a 40-40 things , the rest being undecided.
http://findarticles.com/p/articles/mi_m1355/is_n22_v91/ai_19332942/
The things is, it does not seem to be extrapolatable to all country, as a similar study I remember there were more atheism physicist in sweden and less in italy/spain in percentage. I can't find it anymore in google, and can't be bothered.
I knew an astronomy (of all things) professor who was a believer.
Most of them probably don't. In their profession you can look into the Heavens and see many amazing things but theres one thing you can't see. God or anything else that isn't there.