Who would the best publisher be for publishing my book?

[cathrl69]

And your physics qualifications are...?

"Do my qualifications really matter at this moment?"

Yes, of course they matter. If you're serious about this, then what you do is go to an academic publisher (in the UK it might be Oxford University Press) and get an advance based on your outline. But you'd need to be a recognised expert with a bare minimum of a doctorate and a lectureship in the area of physics you want to write about.

Vanity publishing is _never_ recommended, but if you have nothing more than a physics degree, it's pretty much your only option for something like that.