Three months before his untimely death in Paris in July 1912, Henri Poincaré formulated the conjecture that Planck’s action element could (should) be regarded as constituting a “véritable atome”, i.e. an “atom of motion”, whose integrity arises from the fact that the “points” it contains are equivalent to one another from the standpoint of probability. In this paper we investigate the possibility that this conjecture provides a clue to the origin and nature of dark matter.
Cite this paper
J. Auffray, "Is Dark Matter Made up of Xons?," Journal of Modern Physics
, Vol. 4 No. 8, 2013, pp. 121-125. doi: 10.4236/jmp.2013.48A011
 L. Smolin, “The Trouble with Physics,” Houghton Mifflin, Boston, 2006.
 C. Rovelli, “Forget Time,” Essay Written for the FQXi Contest on the Nature of Time, 2008.
 H. Poincaré, “Mathematics and Science: Last Essays,” Dover, New York, 1963.
 “La Théorie du Rayonnement et les Quanta,” Transcripts of the Solvay Congress 1911, Gauthier-Villars, Paris, 1912.
 H. Poincaré, “Dernières Pensées,” Op. Cit., p. 185.
 J. Gray, Y.-H. He, V. Jejjala and B. D. Nelson, “Vacuum Geometry and the Search for New Physics,” 2006.
 G. W. Leibniz, “Actiones Motuum Formales Sunt in Ratione Composita Diffusionum et Intensionum,” Mathematische Schriften 6, Georg Olms Verlag, Hildesheim, New York, 1971, p. 355.
 L. Nottale, “Scale Relativity and Fractal Space-Time: A New Approach to Unifying Relativity and Quantum Mechanics,” Imperial College Press, London, 2011.
 H.-O. Peitgen et al., “Fractals for the Classroom,” Springer-Verlag, Berlin, 1993, pp. 49-60.
 J. Maldacena, “The Quantum Space-Time,”
 L. Lederman and D. Teresi, “The God Particle,” Delta Books, New York, 1993, p. 211.