Dark energy density predicted and explained
نویسندگان
چکیده
منابع مشابه
Holographic Dark Information Energy: Predicted Dark
Several models have been proposed to explain the dark energy that is causing universe expansion to accelerate. Here the acceleration predicted by the Holographic Dark Information Energy (HDIE) model is compared to the acceleration that would be produced by a cosmological constant. While identical to a cosmological constant at low redshifts, z < 1, the HDIE model results in smaller Hubble parame...
متن کاملHolographic Dark Information Energy: Predicted Dark Energy Measurement
Several models have been proposed to explain the dark energy that is causing universe expansion to accelerate. Here the acceleration predicted by the Holographic Dark Information Energy (HDIE) model is compared to the acceleration that would be produced by a cosmological constant. While identical to a cosmological constant at low redshifts, z < 1, the HDIE model results in smaller Hubble parame...
متن کاملPredicted Dark Energy Constraints using 3D Weak Lensing
I hereby present two different methods that will allow weak lensing shape measurements of galaxies combined with redshift information – 3D weak lensing – to constrain the dark energy equation of state. The two methods are the geometric ratio test (Taylor et al. 2007) and a shear harmonic test (Heavens et al. 2006). The results presented here use a Fisher matrix approach for each method to place...
متن کاملDark Energy Density in Brane World
We present a possible explanation to the tiny positive cosmological constant under the frame of AdS5 spacetime embedded by a dS4 brane. We calculate the dark energy density by summing the zero point energy of massive scalar fields in AdS5 spacetime. Under the assumption that the radius of AdS5 spacetime is of the same magnitude as the radius of observable universe, the dark energy density in dS...
متن کاملDark Matter and Dark Energy
I briefly review our current understanding of dark matter and dark energy. The first part of this paper focusses on issues pertaining to dark matter including observational evidence for its existence, current constraints and the ‘abundance of substructure’ and ‘cuspy core’ issues which arise in CDM. I also briefly describe MOND. The second part of this review focusses on dark energy. In this pa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EPL (Europhysics Letters)
سال: 2019
ISSN: 1286-4854
DOI: 10.1209/0295-5075/125/19001