
The results of the simulation show the growth of tiny, extremely dense structures very soon after the inflation phase of the very early universe. Between the initial and final states in the simulation (top left and right respectively), the area shown has expanded to ten million times its initial volume, but is still many times smaller than the interior of a proton. The enlarged clump at the bottom left would have a mass of about 20kg.
Photo: Jens Niemeyer, University of Göttingen
Never having been especially interested in physics which, compared to biology, I found dry and uninteresting - probably wrongly - this subject is not something I can claim any great understanding of, but this simulation addresses the first few microseconds after the Big Bang, in the instance before the larger structures such as elementary particles came into existence.
It has been said that the initial density of the universe at this time was some trillion times that of water. Just how dense can be judged from the fact that, according to this computer simulation, some 10-24 seconds after the BB, bodies smaller than a proton had a mass of about 20 Kg! These 'inflaton halos' were responsible for the rapid inflation of the nascent Universe.
The simulation was done by theoretical physicists at the Universities of Göttingen, Germany and Auckland, New Zealand. The press release from Georg-August-Universität, Göttingen gives the details: