
 Bringing the Dirac Coincidences up to date 
  In his paper, Dirac noted that, for some unexplained reason, the ratio of the electrostatic to gravitational force between an electron and a proton is roughly equal to the age of the universe divided by an elementary time constant, implying that 
  The upshot, then, is that by combining Dirac’s empirical coincidences with standard inflation theory, one seems to arrive at a way of estimating vacuum energy densities that for the first time gives values consistent with observational constraints at all the critical cosmological epochs. 
  O By linking Dirac’s coincidences to concepts drawn from inflation theory, we are led to the possibility that the most recent vacuum phase transition, due to quarkhadron confinement, led to a remnant vacuum energy making an appreciable contribution to the total massenergy of the current universe. 
 ourworld.compuserve.com /homepages/rajm/agdirac.htm (2042 words) 
