Pascual Jordan returned to Germany, to a post at the University of Rostock, from where over the next couple of years he maintained a correspondence with Bohr about the relationship between physics and biology. Their ideas culminated in what is arguably the first scientific paper on quantum biology, written by Jordan in 1932 for the German journal Die Naturwissenschaften and entitled “Die Quantenmechanik und die Grundprobleme der Biologie und Psychologie” (“Quantum mechanics and the fundamental problems of biology and psychology”).
