He has worked actively as a theoretical physicist in England and Canada.
But Peat's interests expanded to include psychology, particularly that of Carl Jung, art and general aspects of culture, including that of Native America. Peat is the author of many books including a biography of David Bohm, with whom Peat collaborated, books on quantum theory and chaos theory, as well as a study of Synchronicity. Since moving to the village of Pari in Italy, Peat has created the Pari Center for New Learning.