On the Origin and Evolution of the Universe: Chaos or Cosmos?
On the Origin and Evolution of the Universe: Chaos or Cosmos?
On the Origin and Evolution of the Universe: Chaos or Cosmos?
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In Search <strong>of</strong> Quantum GravityUnderst<strong>and</strong>ing how <strong>the</strong> universe began requires developing a better<strong>the</strong><strong>or</strong>y <strong>of</strong> how space, time, <strong>and</strong> matter are related. In physics, a <strong>the</strong><strong>or</strong>y isnot a guess <strong>or</strong> a hypo<strong>the</strong>sis. It is a ma<strong>the</strong>matical model that lets us makepredictions about how <strong>the</strong> w<strong>or</strong>ld behaves. Einstein’s <strong>the</strong><strong>or</strong>y <strong>of</strong> gravity, f<strong>or</strong>example, accurately describes how matter responds to gravity in <strong>the</strong> largescalew<strong>or</strong>ld around us.And our best <strong>the</strong><strong>or</strong>y <strong>of</strong> <strong>the</strong> tiny sub-atomic realm, called quantum<strong>the</strong><strong>or</strong>y, makes very accurate predictions about <strong>the</strong> behavi<strong>or</strong> <strong>of</strong> matter attiny scales <strong>of</strong> distance.But <strong>the</strong>se two <strong>the</strong><strong>or</strong>ies are not complete <strong>and</strong> are not able to makeaccurate predictions about <strong>the</strong> very earliest moments when <strong>the</strong> universewas both extremely dense <strong>and</strong> extremely small.SRC, Warsaw, 3 October 2013 10
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