the title says it all really. I know other SE sites are using the blog feature, but i don't understand yet what is the process for submission of articles. I don't see a physics blog site anywhere so i assume that needs to be deployed first.
There isn't a Physics SE blog, and you can't really submit articles to something that doesn't exist ;-) So there is no way (for now).
The possibility of starting a site blog has been previously discussed but there was not enough support for it.