scholarly journals Dark energy coupling with electromagnetism as seen from future low-medium redshift probes

2014 ◽  
Vol 89 (8) ◽  
Author(s):  
E. Calabrese ◽  
M. Martinelli ◽  
S. Pandolfi ◽  
V. F. Cardone ◽  
C. J. A. P. Martins ◽  
...  
Keyword(s):  
Dark Energy ◽  
Energy Coupling

Static universe model existing due to the matter‐dark energy coupling

2019 ◽  
Vol 340 (9-10) ◽  
pp. 841-846
Author(s):  
Alejndro Cabo Bizet ◽  
Alejandro Cabo Montes de Oca
Keyword(s):  
Dark Energy ◽  
Energy Coupling ◽  
Universe Model ◽  
Static Universe

scholarly journals Slow-roll inflation in the presence of a dark energy coupling

2009 ◽  
Vol 79 (10) ◽  
Author(s):  
Philippe Brax ◽  
Carsten van de Bruck ◽  
Lisa M. H. Hall ◽  
Joel M. Weller
Keyword(s):  
Dark Energy ◽  
Energy Coupling ◽  
Slow Roll ◽  
Slow Roll Inflation

scholarly journals Detecting Dark Matter–Dark Energy Coupling with the Halo Mass Function

2008 ◽  
Vol 687 (1) ◽  
pp. 7-11 ◽  
Author(s):  
P. M. Sutter ◽  
P. M. Ricker
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Energy Coupling ◽  
Mass Function

scholarly journals K-inflation with a dark energy coupling

2010 ◽  
Vol 81 (2) ◽  
Author(s):  
Yubei Yue ◽  
Bin Chen
Keyword(s):  
Dark Energy ◽  
Energy Coupling

scholarly journals Constraining Dark Matter-Dark Energy Interaction with Gas Mass Fraction in Galaxy Clusters

2009 ◽  
Vol 5 (H15) ◽  
pp. 328-328
Author(s):  
R. S. Gonçalves ◽  
J. S. Alcaniz ◽  
A. Dev ◽  
D. Jain
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Galaxy Clusters ◽  
Mass Fraction ◽  
Galaxy Cluster ◽  
Energy Coupling ◽  
Cosmic Acceleration ◽  
Dark Sector ◽  
Cluster Data ◽  
Λcdm Model

AbstractThe recent observational evidence for the current cosmic acceleration have stimulated renewed interest in alternative cosmologies, such as scenarios with interaction in the dark sector (dark matter and dark energy). In general, such models contain an unknown negative-pressure dark component coupled with the pressureless dark matter and/or with the baryons that results in an evolution for the Universe rather different from the one predicted by the standard ΛCDM model. In this work we test the observational viability of such scenarios by using the most recent galaxy cluster gas mass fraction versus redshift data (42 X-ray luminous, dynamically relaxed galaxy clusters spanning the redshift range 0.063 < z < 1.063), Allen et al. (2008), to place bounds on the parameter ε that characterizes the dark matter/dark energy coupling. The resulting are consistent with, and typically as constraining as, those derived from other cosmological data. Although a time-independent cosmological constant (ΛCDM model) is a good fit to these galaxy cluster data, an interacting energy component cannot yet be ruled out.

scholarly journals Constraints on interacting dark energy models through cosmic chronometers and Gaussian process

2021 ◽  
Vol 81 (6) ◽  
Author(s):  
Muhsin Aljaf ◽  
Daniele Gregoris ◽  
Martiros Khurshudyan
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Gaussian Process ◽  
Cold Dark Matter ◽  
Hubble Constant ◽  
Energy Coupling ◽  
Chaplygin Gas ◽  
History Of ◽  
Friedmann Cosmological Models ◽  
Interacting Dark Energy Models

AbstractIn this paper, after reconstructing the redshift evolution of the Hubble function by adopting Gaussian process techniques, we estimate the best-fit parameters for some flat Friedmann cosmological models based on a modified Chaplygin gas interacting with dark matter. In fact, the expansion history of the Universe will be investigated because passively evolving galaxies constitute cosmic chronometers. An estimate for the present-day values of the deceleration parameter, adiabatic speed of sound within the dark energy fluid, effective dark energy, and dark matter equation of state parameters is provided. By this, we mean that the interaction term between the two dark fluids, which breaks the Bianchi symmetries, will be interpreted as an effective contribution to the dark matter pressure similarly to the framework of the “Generalized Dark Matter”. We investigate whether the estimates of the Hubble constant and of the present-day abundance of dark matter are sensitive to the dark matter–dark energy coupling. We will also show that the cosmic chronometers data favor a cold dark matter, and that our findings are in agreement with the Le Châtelier–Braun principle according to which dark energy should decay into dark matter.

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