string field theory is a a "field" of physics which is entirely theoretical and has no experiment data to back it up.... hard to imagine how even the top person

string field theory is a a "field" of physics which is entirely theoretical and has no experiment data to back it up.... hard to imagine how even the top person in that field would be a top physicist given the large number of top physicists who are doing useful stuff like LIGO, CERN, etc.