Astronomy:Chaplygin gas
From HandWiki
Chaplygin gas,[1][2] which occurs in certain theories of cosmology, is a hypothetical substance that satisfies an exotic equation of state in the form [math]\displaystyle{ p = -A/\rho^\alpha }[/math], where [math]\displaystyle{ p }[/math] is the pressure, [math]\displaystyle{ \rho }[/math] is the density, with [math]\displaystyle{ \alpha = 1 }[/math] and [math]\displaystyle{ A }[/math] a positive constant. The substance is named after Sergey Chaplygin.
In some models, generalized Chaplygin gas is considered, where [math]\displaystyle{ \alpha }[/math] is a parameter, which can take on values [math]\displaystyle{ 0 \lt \alpha \le 1 }[/math].
See also
References
- ↑ Kamenshchik, Alexander Yu.; Moschellai, Ugo; Pasquier, Vincent (2001), "An alternative to quintessence", Phys. Lett. B 511 (2–4): 265, doi:10.1016/S0370-2693(01)00571-8, Bibcode: 2001PhLB..511..265K
- ↑ Bento, M. C.; Bertolami, O.; Sen, A. A. (2002), "Generalized Chaplygin gas, accelerated expansion and dark energy-matter unification", Phys. Rev. 66 (4): 043507, doi:10.1103/PhysRevD.66.043507, Bibcode: 2002PhRvD..66d3507B
![]() | Original source: https://en.wikipedia.org/wiki/Chaplygin gas.
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