ProfessorRobert Delbourgo

Emeritus Professor

Mathematics

  • Emeritus Professor
    Mathematics

SERVICE & ENGAGEMENT

  • MEDIA PUBLICATION
    Properties, generations and masses
    1 Jan 2012
    Schemes based on anticommuting scalar coordinates, corresponding to properties, lead to generations of particles very naturally. In contrast to the standard model, where masses arise through independent Yukawa couplings to a single Higgs isodoublet, property models produce Higgs fields in various multiplet denominations, but contain a single Yukawa coupling. A renormalizable superHiggs potential of quartic order then produces very strongly constrained masses for generations of fields, which depend on just three constants. By allowing for a small parameter, which is meant to characterise the quantum loop effects for the effective potential, one can obtain nonzero masses for the engendered masses. We illustrate the phenomenon for two and three complex coordinates; the more realistic case of five complex coordinates is not yet fully treatable because of its complexity.
  • MEDIA PUBLICATION
    On 2D periodic hexagonal cells
    1 Jan 2011
    Graphene, the new wondrous material, is a perfect example of a two-dimensional hexagonal crystal unlike any other. Here we exhibit some of the characteristic directional features associated with hexagonal cells, emphasising the sixfold symmetry. We depict the X-ray, vibrational and electronic band structures to be expected in such systems via 2 dimensional contour plots.