Cosmological evolution with a logarithmic correction in the dark energy entropy
msra(2006)
摘要
In a thermodynamical model of cosmological FLRW event horizons for the dark
energy (DE), we consider a logarithmic corrective term in the entropy to which
corresponds a new term in the DE density. This model of $\Lambda (t)$ in an
interacting two-component cosmology with cold dark matter (DM) as second
component leads to a system of coupled equations, yielding, after numerical
resolution, the evolutions of $\Lambda (t)$, the Hubble $H(t)$, vacuum density
$\Omega \_{\Lambda}(t)$, deceleration $q(t)$ and statefinder $R(t)$ and $S(t)$
parameters. Its results, compatible with an initial inflation and the current
observations of the so-called "concordance model", predict a graceful exit of
early inflation and the present acceleration and solve in the same time the age
and coincidence problems. Moreover they account for the low-$l$ CMBR power
spectrum suppression.
更多查看译文
关键词
cmbr low mul- tipoles theory.,: dark energy theory,snia constraints,power spectrum,astrophysics,cold dark matter,dark energy,quantum cosmology,event horizon
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要