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Vacuum energy
The vacuum energy is the energy of empty space.
Explanation
Quantum fluctuations cause both matter and antimatter to form from 'nothing', but together they disappear very quickly.
Note
Perhaps the vacuum energy is the same as the 'dark energy' that is postulated to explain the accelerated expansion of the universe.
HistoriyThe basic problem of a vacuum energy producing a gravitational effect was identified as early as 1916 by the German chemist Walther Nernst. |