Has there ever been a sci-fi story based in a world with a scientifically provable god?

I’ve been reading a bit more atheist literature as of late, and something that comes up a lot is that there has never been a scientifically valid model of anything that requires a god to work. Therefore there has never been a scientific experiment that has proven the existence of a god. I’m wondering if any sci-fi author has ever played with this idea and made a world with a scientifically provable god. A world that honors science and also believes in god.