Clearinghouse for Physics Postdoc positions? How does one find postdoc positions after completing a physics Ph.D.?
Does there exist a central website listing opportunities?
There is no clearinghouse or standard way of advertising postdoc jobs in Physics. Opportunities may be advertised on the Physics Today Jobs or Nature Jobs websites.  But more often they are listed on an institution's job website or a research group website.  Positions may be advertised on mailing lists.  Some just are not advertised at all.  You have to ask.