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Dark matter and dark energy may be different aspects of a single unknown force
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Thierry Van Driessche Send message Joined: 20 Aug 02 Posts: 3083 Credit: 150,096 RAC: 0 |
In the last few decades, scientists have discovered that there is a lot more to the universe than meets the eye: the cosmos appears to be filled with not just one, but two invisible constituents –dark matter and dark energy – whose existence has been proposed based solely on their gravitational effects on ordinary matter and energy. Now, theoretical physicist Robert J. Scherrer has come up with a model that could cut the mystery in half by explaining dark matter and dark energy as two aspects of a single unknown force. His model is described in a paper titled "Purely Kinetic k Essence as Unified Dark Matter" published online by Physical Review Letters on June 30 and available online at http://arxiv.org/abs/astro-ph/0402316. "One way to think of this is that the universe is filled with an invisible fluid that exerts pressure on ordinary matter and changes the way that the universe expands," says the professor of physics at Vanderbilt University. According to Scherrer, his model is extremely simple and avoids the major problems that have characterized previous efforts to unify dark matter and dark energy. The rest of the story can be read here. Greetings from Belgium. |
Liberto [Valencia] Send message Joined: 24 Jul 01 Posts: 131 Credit: 29,008 RAC: 0 |
> The rest of the story can be read <a> href="http://www.eurekalert.org/pub_releases/2004-07/vu-dma063004.php">here[/url]. > > Greetings from Belgium. > > Well if you want to read more about the same: http://www.space.com/scienceastronomy/mystery_monday_040712.html |
Thierry Van Driessche Send message Joined: 20 Aug 02 Posts: 3083 Credit: 150,096 RAC: 0 |
Sorry, wrong thread. Had to be post here. |
Mjöllnir Send message Joined: 3 Apr 99 Posts: 46 Credit: 0 RAC: 0 |
thanks Thierry |
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