안창림
김찬주
Eric V. Linder
2017-08-28T22:06:04Z
2017-08-28T22:06:04Z
2011
0370-2693
OAK-8043
http://dspace.ewha.ac.kr/handle/2015.oak/222005
We consider renormalization group flow applied to the cosmological dynamical equations. A consistency condition arising from energy-momentum conservation links the flow parameters to the cosmological evolution, restricting possible behaviors. Three classes of cosmological fixed points for dark energy plus a barotropic fluid are found: a dark energy dominated universe, which can be either accelerating or decelerating depending on the RG flow parameters, a barotropic dominated universe where dark energy fades away, and solutions where the gravitational and potential couplings cease to flow. If the IR fixed point coincides with the asymptotically safe UV fixed point then the dark energy pressure vanishes in the first class, while (only) in the de Sitter limit of the third class the RG cutoff scale becomes the Hubble scale. © 2011 Elsevier B.V.
English
From asymptotic safety to dark energy
Article
41276
704
SCI
SCIE
SCOPUS
10
14
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
10.1016/j.physletb.2011.08.075
WOS:000295750500003
2-s2.0-80052962500
Ahn C.
Kim C.
Linder E.V.
안창림(7201986717)
김찬주(7409874137)
20170601144921