3 papers
astro-ph2004
Bouncing Universes with Varying Constants
John D. Barrow, Dagny Kimberly, Joao Magueijo
We investigate the behaviour of exact closed bouncing Friedmann universes in theories with varying constants. We show that the simplest BSBM varying-alpha theory leads to a bouncin…
hep-ph2003
Varying Alpha and the Electroweak Model
Dagny Kimberly, Joao Magueijo
Inspired by recent claims for a varying fine structure constant, alpha, we investigate the effect of ``promoting coupling constants to variables'' upon various parameters of the st…
gr-qc2003
Non-Linear Relativity in Position Space
Dagny Kimberly, João Magueijo, João Medeiros
We propose two methods for obtaining the dual of non-linear relativity as previously formulated in momentum space. In the first we allow for the (dual) position space to acquire a…