Accelerating Cosmologies with an Anisotropic Equation of State
By Tomi Koivisto, D. Mota. 2007
158 citations recorded by the source corpus.
If the dark energy equation of state is anisotropic, the expansion rate of the universe becomes direction dependent at late times. We show that such models are not only cosmologically viable but that they could explain some of the observed anomalies in the cosmic microwave background. The possible anisotropy can then be constrained by studying its effects on the luminosity distance-redshift relation inferred from several observations. A vector field action for dark energy is also presented as an example of such a possibility.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/b755c218dd54ab5369b37bb2bb291a524a2b1e94
How researchers see this paper
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In Astronomy and Astrophysics
- Lavinia Heisenberg
- A. Banday
- H. Eriksen
- K. G'orski
- H. Hoekstra
- F. Hansen
- Tomi Koivisto
- Thomas D. Kitching
In Nuclear and High Energy Physics
- Lavinia Heisenberg
- Tomi Koivisto
- S. Tsujikawa
- Claudia de Rham
- A. Banday
- K. G'orski
- Pedro G. Ferreira
- H. Eriksen
Citations in the corpus
- INCREASING EVIDENCE FOR HEMISPHERICAL POWER ASYMMETRY IN THE FIVE-YEAR WMAP DATA (2009, background): “…2008; Erickcek et al. 2008a,b; Gordon et al. 2005; Gümrükçüoglu et al. 2007; Himmetoglu et al. 2008a,b; Kahniashvili et al. 2008; Kanno et al. 2008; Koivisto & Mota 2008a,b; Pereira et al. 2007; Pitrou et al. 2008; Pullen & Kamionkowski 2007; Watanabe et al. 2009; Yokoyama & Soda 2008), but…”
- Probing the anisotropic local Universe and beyond with SNe Ia data (2010, background): “…of the Universe (Kolatt & Lahav 2001; Bonvin, Durrer & Kunz 2006; Gordon, Land & Slosar 2007; Schwarz & Weinhorst 2007; Gupta, Saini & Laskar 2008; Koivisto & Mota 2008a,b; Blomqvist, Enander & Mortsell 2008; Cooray, Holz & Caldwell 2010; Gupta & Saini 2010; Koivisto et al. 2011) and to determine…”
- Cosmology and Fundamental Physics with the Euclid Satellite (2012, background): “Conversely, as suggested in [520, 519, 106, 233, 251], dark energy with anisotropic pressure acts as a late-time source of anisotropy.”