Friday, January 22, 2010

Gravity

"A crucial ingredient is that only a finite number of degrees of freedom are associated with a given spatial volume, as dictated by the holographic principle. The energy, that is equivalent to the matter, is distributed evenly over the degrees of freedom, and thus leads to a temperature. The product of the temperature and the change in entropy due to the displacement of matter is shown to be equal to the work done by the gravitational force. In this way Newton’s law of gravity emerges in a surprisingly simple fashion."

"So the screens that store the information are like stretched horizons. On one side there is space, on the other side nothing yet."

"Thus we conclude that acceleration is related to an entropy gradient. This will be one of our main principles: inertia is a consequence of the fact that a particle in rest will stay in rest because there are no entropy gradients. Given this fact it is natural to introduce the Newton potential Φ and write the acceleration as a gradient"

"Acceleration and gravity are both emergent phenomena."

E. P. Verlinde
Philosopher, Physicist, and Mathematician

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