Oh, come now. If you're a retired physicist surely you should know all about how to publish? Now, it's an unfortunate fact that 95% of all physics papers submi

Oh, come now. If you're a retired physicist surely you should know all about how to publish? Now, it's an unfortunate fact that 95% of all physics papers submitted by unaffiliated researchers is garden-variety crackpottery. Giving you the benefit of doubt and for now assuming that you're not a crackpot, though, there's no problem with just submitting your paper to the appropriate journal and keeping the "affiliation" field blank. Oh, and remember that the editors will be alert for any signs that you're a crackpot, so write your abstract and cover letter in a way that emphasises the genuine and original contributions which your paper makes and doesn't exaggerate its importance.