Starting in 1971, he did post-doctoral work at
Brookhaven National Laboratory. In 1973 he moved to
California Institute of Technology to work with Nobel laureate
Richard Feynman. It was there that he did his most-cited work, producing the "Field-Feynman"
Monte Carlo used to compare the production of observable particles arising from the fragmentation of quarks and gluons in different particle accelerator environments. Two papers from this work, each with over 1000 citations, continue to be referenced . During this time he served as the PhD thesis advisor to computer-scientist/physicist
Stephen Wolfram, who is CEO of
Wolfram Research and was considered a physics prodigy in his student years. In 1980, Field moved to the
University of Florida as a professor and, later, emeritus professor. ==Honors==