scholarly journals Aetherizing Lambda: Barotropic fluids as dark energy

2009 ◽  
Vol 80 (2) ◽  
Author(s):  
Eric V. Linder ◽  
Robert J. Scherrer
Keyword(s):  
Dark Energy ◽  
Barotropic Fluids

scholarly journals Coupled tachyonic dark energy: A dynamical analysis

2015 ◽  
Vol 24 (11) ◽  
pp. 1550085 ◽  
Author(s):  
Ricardo C. G. Landim
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Critical Points ◽  
Autonomous System ◽  
Evolution Equations ◽  
Dynamical Analysis ◽  
Tachyonic Field ◽  
Barotropic Fluids ◽  
Tachyonic Dark Energy

In this paper, we present a dynamical analysis for a coupled tachyonic dark energy with dark matter. The tachyonic field ϕ is considered in the presence of barotropic fluids (matter and radiation) and the autonomous system due to the evolution equations is studied. The three cosmological eras (radiation, matter and dark energy) are described through the critical points, for a generic potential V(ϕ).

Dark energy on firmer footing

Nature ◽  
2010 ◽  
Author(s):  
Eugenie Samuel Reich
Keyword(s):  
Dark Energy

Dark energy probe gets high praise

Nature ◽  
2007 ◽  
Author(s):  
Geoff Brumfiel
Keyword(s):  
Dark Energy

Editorial [Dark Energy and Modified Gravity]

2010 ◽  
Vol 3 (2) ◽  
pp. 12-12
Author(s):  
S. Nojiri ◽  
S. D. Odintsov
Keyword(s):  
Dark Energy ◽  
Modified Gravity

Cosmological constant

2018 ◽  
Author(s):  
Michael Kachelriess
Keyword(s):  
Dark Energy ◽  
Cosmological Constant ◽  
Accelerated Expansion ◽  
Vacuum Fluctuations ◽  
Present Epoch ◽  
Modify Gravity ◽  
Expansion Of The Universe ◽  
The Universe

The contribution of vacuum fluctuations to the cosmological constant is reconsidered studying the dependence on the used regularisation scheme. Then alternative explanations for the observed accelerated expansion of the universe in the present epoch are introduced which either modify gravity or add a new component of matter, dubbed dark energy. The chapter closes with some comments on attempts to quantise gravity.

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