A Tear at the Edge of Creation

Marcelo Gleiser

From the Introduction... The cornerstone of any unification theory is the notion that a more profound description of Nature possesses a higher level of mathematical symmetry. Echoing the teachings of Pythagoras and Plato, this idea carries with it an implicit aesthetic judgment that such theories are more beautiful, and, as the poet John Keats wrote in 1819, that “beauty is truth.” And yet, as we investigate the experimental evidence for unification, or even for how such ideas can be experimentally verified, we find very little hard data supporting them. Of course, symmetry remains an essential tool in the physical sciences. But during the past fifty years, discoveries in experimental physics have shown time and again that our expectations of higher symmetry are more expectations than realities. Although at first very distressing at a personal level, this realization eventually...