THE INFLUENCE OF DARK ENERGY ON THE LARGE SCALE STRUCTURE FORMATION

2010 ◽  
Vol 25 (11n12) ◽  
pp. 874-884 ◽  
Author(s):  
SEOKCHEON LEE
Keyword(s):  
Dark Energy ◽  
Equation Of State ◽  
Structure Formation ◽  
Poisson Distribution ◽  
Large Scale ◽  
Density Perturbation ◽  
Spherical Collapse ◽  
Collapse Model ◽  
Small Scales ◽  
Large Scale Structure Formation

Inhomogeneity at small scales (Mpcs) of our universe is manifest from observations. In regions smaller than 8h-1 Mpc galaxies tend to cluster instead of showing a Poisson distribution. The properties of the spherical collapse model which approximately depicts this nonlinearity of the density perturbation are investigated when there exits dark energy. The evolution of a spherical perturbation depends only on the initial critical overdensity threshold for the collapse, δc and its value approaches to 1.58 instead of the conventionally known 1.69 independent of the value of the equation of state of dark energy.

scholarly journals Large-scale structure formation with massive neutrinos and dynamical dark energy

2014 ◽  
Vol 89 (10) ◽  
Author(s):  
Amol Upadhye ◽  
Rahul Biswas ◽  
Adrian Pope ◽  
Katrin Heitmann ◽  
Salman Habib ◽  
...  
Keyword(s):  
Dark Energy ◽  
Structure Formation ◽  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Massive Neutrinos ◽  
Dynamical Dark Energy ◽  
Large Scale Structure Formation

scholarly journals Large-scale structure formation in ionic solution and its role in electrolysis and conductivity

PLoS ONE ◽  
2019 ◽  
Vol 14 (3) ◽  
pp. e0213697
Author(s):  
Chut-Ngeow Yee ◽  
C. H. Raymond Ooi ◽  
Luck-Pheng Tan ◽  
Misni Misran ◽  
Nyiak-Tao Tang
Keyword(s):  
Structure Formation ◽  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Ionic Solution ◽  
Large Scale Structure Formation

scholarly journals Improvements on a Unified Dark Matter Model

2016 ◽  
Vol 25 (2) ◽  
Author(s):  
A. Del Popolo ◽  
Xi-Guo Lee
Keyword(s):  
Dark Matter ◽  
Density Perturbation ◽  
Chaplygin Gas ◽  
Generalized Chaplygin Gas ◽  
Slowing Down ◽  
Spherical Collapse ◽  
Collapse Model ◽  
Matter Model ◽  
Dark Matter Model

AbstractWe study, by means of a spherical collapse model, the effect of shear, rotation, and baryons on a generalized Chaplygin gas (gCg) dominated universe. We show that shear, rotation, and the presence of baryons slow down the collapse compared to the simple spherical collapse model. The slowing down in the growth of density perturbation is able to solve the instability of the unified dark matter (UDM) models described in previous papers (e.g.

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