Phenomenology of MOND and gravitational polarization
  The phenomenology of MOND (flat rotation curves of galaxies, baryonic
Tully-Fisher relation, etc.) is a basic set of phenomena relevant to galaxy
dynamics and dark matter distribution at galaxy scales. Still unexplained
today, it enjoys a remarkable property, known as the dielectric analogy, which
could have far-reaching implications. In the present paper we discuss this
analogy in the framework of simple non-relativistic models. We show how a
specific form of dark matter, made of two different species of particles
coupled to different Newtonian gravitational potentials, could permit to
interpret in the most natural way the dielectric analogy of MOND by a mechanism
of gravitational polarization.
