Talks

I will review some recent claims of anomalous signatures in the WMAP data of the CMB - specifically those that indicate a departure from Statistical Isotropy. This will include an outline of various methods of analysis and the issues involved in testing the Gaussianity and Statistical Isotropy of the CMB. I will then discuss the various implications of the observations - the most exciting of which is that our Universe is not Isotropic and more complicated cosmological models need to be considered.

Preon models enjoyed considerable popularity during the early 1980s, but have seen little progress since then. I will describe a correspondence between one of the more successful preon models and a simple game involving the twisting and braiding of ribbons, subject to straightforward topological conditions. This reproduces the fermions and gauge bosons of the standard model, as well as the electromagnetic, weak and colour interactions. The prospect that such structures may occur naturally within Loop Quantum Gravity will be discussed

In honour of the hundredth anniversary of Einstein\'s \'miraculous year\', I will describe the modern view of space and time. I will start with special relativity, then describe how space and time are modified in Einstein\'s general theory of relativity, and end with recent ideas coming out of string theory. In all cases, the view of space and time arising from modern physics is radically different from our everyday experience, yet many of their strange properties have already been confirmed by experiment. Einstein, space, time, general relativity, special relativity, string theory, dimension, simultaneity, gravity, black hole, singularity, big bang, space-time