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Timm 28.11.20 08:43

Hints of twisted light offer clues to dark energy’s nature
 
https://www.nature.com/articles/d41586-020-03201-8

Unlike the cosmological constant, quintessence “is a tangible medium and it has fluctuations of its own”, says Robert Caldwell, a cosmologist at Dartmouth College in Hanover, New Hampshire, who was one of the first researchers to propose the material’s existence2. Quintessence could have properties that are intermediate between those of matter and of a cosmological constant, Caldwell adds. As the Universe expands, a cosmological constant would maintain a constant density, whereas the density of quintessence would decrease — although not as fast as the density of matter, which drops as galaxies spread out.

Mit 2,5 sigma ist das noch keine Entdeckung aber zumindest verfolgenswert.


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