Yes, it is. Examples of how people sign their publications after retirement: http://www.ncbi.nlm.nih.gov/pubmed/20440016 http://www.ncbi.nlm.nih.gov/pubmed/2044

Yes, it is. Examples of how people sign their publications after retirement: http://www.ncbi.nlm.nih.gov/pubmed/20440016 http://www.ncbi.nlm.nih.gov/pubmed/20440016 also http://www.ncbi.nlm.nih.gov/pubmed/10700398 http://www.ncbi.nlm.nih.gov/pubmed/10700398 or, if you do not want to mention retired or former, nor start your own company, just provide your home address and indicate your preferred/non-preferred reviewers