Revised Eddington theory of gravity produces universe without a BigBang singularity
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From: Yousuf Khan on 17 Jul 2010 04:34 Revised theory of gravity doesn't predict a Big Bang "Although Eddington played a significant role in developing general relativity, during the following decades he became more interested in finding a theory to unify gravity and quantum mechanics - a task that is still being studied today. In 1924, Eddington proposed a new �gravitational action� as an alternative to the Einstein-Hilbert action, which could serve as an alternative starting point to general relativity. In astrophysics, a gravitational action is the mechanism that describes how gravity can emerge from space-time being curved by matter and energy. However, Eddington�s theory of gravity only worked for empty space and didn�t include any source of energy such as matter, making it an incomplete theory. Since Eddington�s proposal, scientists have attempted various ways of including matter into the theory, although they have run into problems. In this study, Banados and Ferreira have tried a new way to extend the theory to include matter by using a gravitational action called the Born-Infeld action. " http://www.physorg.com/news198135631.html |