Phantom energy
Phantom energy is a hypothetical form of dark energy satisfying the equation of state with . It possesses negative kinetic energy, and predicts expansion of the universe in excess of that predicted by a cosmological constant, which leads to a Big Rip. The idea of phantom energy is often dismissed, as it would suggest that the vacuum is unstable with negative mass particles bursting into existence.[1] The concept is hence tied to emerging theories of a continuously created negative mass dark fluid, in which the cosmological constant can vary as a function of time.[2][3]
Big Rip mechanism
The existence of phantom energy could cause the expansion of the universe to
One application of phantom energy in 2007 was to a cyclic model of the universe, which reverses its expansion extremely shortly before the would-be Big Rip.[4]
See also
References
- ^ Carroll, Sean (September 14, 2004). "Vacuum stability". Preposterous Universe Blog. Retrieved February 1, 2019.; however, note that the preceding source also contains a link to another blog post on the same blog (a post dated one day earlier!) that also discusses (a lot) the topic of "", etc.; therefore, [feel free to] "see also": Carroll, Sean (September 13, 2004). "Phantom Energy". "Preposterous Universe" [blog]. Archived from the original on October 28, 2014. Retrieved November 2, 2020.
- S2CID 53600834.
- ^ Farnes, Jamie (December 17, 2018). "Bizarre 'Dark Fluid' with Negative Mass Could Dominate the Universe". Space.com.
- S2CID 17698158.
Further reading
- Robert R. Caldwell et al.: Phantom Energy and Cosmic Doomsday