# Cosmological Equations for Interacting Energies

@article{Balfagn2010CosmologicalEF, title={Cosmological Equations for Interacting Energies}, author={A. Balfag{\'o}n and Ra{\'u}l Ram{\'i}rez-Satorras and Angel R. Martinez}, journal={arXiv: Cosmology and Nongalactic Astrophysics}, year={2010} }

In this paper the coupling between dark energy and the other components of the cosmological fluid has been studied. Firstly, it will be shown that the application of general cosmological equations, deduced by the authors in a previous work, to the known data of the Abell cluster A586 using the Layzer-Irvine theory gives similar results compared to the work of other authors. The aforesaid method present some problems: the application of an approximate theory (Layzer-Irvine theory), it has only…

#### One Citation

The Layzer-Irvine equation in theories with non-minimal coupling between matter and curvature

- Physics
- 2014

We derive the Layzer-Irvine equation for alternative gravitational theories with non-minimal coupling between curvature and matter for an homogeneous and isotropic Universe. As an application, we…

#### References

SHOWING 1-10 OF 31 REFERENCES

Dark Energy and Dark Gravity

- Physics
- 2007

Observations provide increasingly strong evidence that the universe is accelerating. This revolutionary advance in cosmological observations confronts cosmological theory with a tremendous challenge,…

Principles of Physical Cosmology

- Physics
- 1993

During the last twenty years, dramatic improvements in methods of observing astrophysical phenomena from the ground and in space have added to our knowledge of what the universe is like now and what…

Dark energy and dark gravity: theory overview

- Physics
- 2007

Observations provide increasingly strong evidence that the universe is accelerating. This revolutionary advance in cosmological observations confronts theoretical cosmology with a tremendous…

Top ten accelerating cosmological models

- Physics
- 2006

Recent astronomical observations indicate that the Universe is presently almost flat and undergoing a period of accelerated expansion. Basing on Einstein's general relativity all these observations…

Coupled Quintessence

- Physics
- 1999

A new component of the cosmic medium, a light scalar field or ”quintessence ”, has been proposed recently to explain cosmic acceleration with a dynamical cosmological constant. Such a field is…

TASI Lectures on the cosmological constant

- Physics
- 2008

The energy density of the vacuum, Lambda, is at least 60 orders of magnitude smaller than several known contributions to it. Approaches to this problem are tightly constrained by data ranging from…

The dark energy equation of state

- Physics
- 2008

We perform a study of cosmic evolution with an equation of state parameter $\omega(t)=\omega_0+\omega_1(t\dot H/H)$ by selecting a phenomenological $\Lambda$ model of the form, $\dot\Lambda\sim H^3$.…

Can vacuum decay in our universe

- Physics
- 2005

We take a phenomenological approach to the study of the cosmological evolution of decaying vacuum cosmology (Λ(t)CDM) based on a simple assumption about the form of the modified matter expansion…

Cosmological model with interactions in the dark sector

- Physics
- 2009

A cosmological model for the present Universe is analyzed whose constituents are a non-interacting baryonic matter field and interacting dark matter and dark energy fields. The dark energy and dark…

Probing the coupling between dark components of the universe

- Physics
- 2007

We place observational constraints on a coupling between dark energy and dark matter by using 71 Type Ia supernovae (SNe Ia) from the first year of the five-year Supernova Legacy Survey (SNLS), the…