He began his career in high energy theory ( HEP ) , and has successfully applied many techniques from HEP to condensed matter .
Ian Affleck has made many important contributions to theoretical and mathematical physics .
Ian Affleck began Ian Affleck 's career in high energy theory ( HEP ) , and has successfully applied many techniques from HEP to condensed matter .
Ian Affleck has made many important contributions to theoretical and mathematical physics .