scholarly journals Dark energy with a gradient coupling to the dark matter fluid: cosmological dynamics and structure formation

2018 ◽  
Vol 2018 (01) ◽  
pp. 038-038 ◽  
Author(s):  
Jibitesh Dutta ◽  
Wompherdeiki Khyllep ◽  
Nicola Tamanini
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Structure Formation ◽  
Gradient Coupling

scholarly journals Imprints of dark energy on cosmic structure formation – III. Sparsity of dark matter halo profiles

2013 ◽  
Vol 437 (3) ◽  
pp. 2328-2339 ◽  
Author(s):  
I. Balmès ◽  
Y. Rasera ◽  
P.-S. Corasaniti ◽  
J.-M. Alimi
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Structure Formation ◽  
Dark Matter Halo

scholarly journals Dark matter, dark energy and fundamental acceleration

2020 ◽  
Vol 29 (14) ◽  
pp. 2043030
Author(s):  
Douglas Edmonds ◽  
Djordje Minic ◽  
Tatsu Takeuchi
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Numerical Simulations ◽  
Structure Formation ◽  
Galaxy Clusters ◽  
Cold Dark Matter ◽  
Length Scales ◽  
Astrophysical Objects

We discuss the existence of an acceleration scale in galaxies and galaxy clusters and its relevance for the nature of dark matter. The presence of the same acceleration scale found at very different length scales, and in very different astrophysical objects, strongly supports the existence of a fundamental acceleration scale governing the observed gravitational physics. We comment on the implications of such a fundamental acceleration scale for constraining cold dark matter models as well as its relevance for structure formation to be explored in future numerical simulations.

STRUCTURE FORMATION IN DARK MATTER/DARK ENERGY DOMINATED UNIVERSES

2007 ◽  
Vol 16 (02n03) ◽  
pp. 453-461
Author(s):  
NILZA PIRES ◽  
HIDALYN T. C. M. DE SOUZA
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Structure Formation ◽  
General Result ◽  
High Redshift ◽  
Matter Density ◽  
Density Perturbations ◽  
Hydrodynamic Code ◽  
Baryonic Dark Matter ◽  
Very High

In this work we present preliminary results of an analysis on the evolution of primordial baryonic and dark matter density perturbations. A top-hat hydrodynamic code has been utilized to analyze the evolution of these primordial perturbations, from the beginning of the recombination era until the redshift when the collapse occurs. All the relevant processes are included in the calculations, which includes the effect of a dark energy in the expanding universe. In particular, we find that the perturbations with dark matter collapse at very high redshift, which could explain the existence of old galaxies at high redshift. As a general result we find that the distribution of the non-baryonic dark matter is more concentrated than the baryonic one.

scholarly journals Understanding the suppression of structure formation from dark matter-dark energy momentum coupling

2020 ◽  
Vol 101 (4) ◽  
Author(s):  
Finlay Noble Chamings ◽  
Anastasios Avgoustidis ◽  
Edmund J. Copeland ◽  
Anne M. Green ◽  
Alkistis Pourtsidou
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Structure Formation ◽  
Momentum Coupling

First Structure Formation. II. Cosmic String plus Hot Dark Matter Models

1998 ◽  
Vol 508 (2) ◽  
pp. 530-534 ◽  
Author(s):  
Tom Abel ◽  
Albert Stebbins ◽  
Peter Anninos ◽  
Michael L. Norman
Keyword(s):  
Dark Matter ◽  
Structure Formation ◽  
Cosmic String
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