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Dark energy is broadly similar to inflation and is thought to be causing the expansion of the present-day universe to accelerate. However, the energy scale of dark energy is much lower, 10 −12 GeV, roughly 27 orders of magnitude less than the scale of inflation.
However, inflation must have occurred at a much higher (negative) energy density than the dark energy we observe today, and inflation is thought to have completely ended when the universe was just a fraction of a second old. It is unclear what relation, if any, exists between dark energy and inflation.
If the theory of inflation is correct, the universe went through an episode dominated by a different form of dark energy in the first moments of the Big Bang; but inflation ended, indicating an equation of state much more complicated than those assumed so far for present-day dark energy. It is possible that the dark energy equation of state ...
“Dark energy is a misidentification of variations in the kinetic energy of expansion, which is not uniform in a Universe as lumpy as the one we actually live in.
Hugh Johnson Economics Chairman and Chief Economist Hugh Johnson joins Yahoo Finance Live to discuss how the markets responded to the latest inflation data and the outlook for Fed policy.
Economic data releases and earnings. ... Core inflation excludes volatile food and energy and just dropped to 4.3% — the lowest since September 2021.
Different theories of dark energy suggest different values of w, with w < − 1 / 3 for cosmic acceleration (this leads to a positive value of ä in the acceleration equation above). The simplest explanation for dark energy is that it is a cosmological constant or vacuum energy; in this case w = −1.
Inflation cooled in November on an ... with energy prices dropping 2.3% month over month and 5.4% on an annual basis. This was dragged down by falling gas prices, which declined 6.0% from October ...