On the possibility of unifying the electromagnetic and the gravitational fields
arXiv:physics/0702221
Abstract
This is the first paper by Gunnar Nordstr{ö}m (1881--1923) on his five dimensional theory. In his summary he states: ''It is shown, that a unifying treatment of the electromagnetic and gravitational fields is possible, if one considers the four dimensional spacetime world to be a surface in a five dimensional world.'' This paper was followed by two other papers written by the Gunnar Nordstr{ö}m during the one year period 1914--1915, on the same subject, which are also made available here.
Translation of Gunnar Nordstr{ö}m's first paper on 5-dimensional ''unified'' theory 1914: ''{Ü}ber die M{ö}glichkeit, das elektromagnetische Feld und das Gravitationsfeld zu vereinigen''