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| darkenergy [2020/07/13 15:18] – bittner | darkenergy [2021/10/18 14:36] (current) – manuel |
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| ====Dark Energy and Modified Gravity==== | ====Dark Energy and Modified Gravity==== |
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| {{ :fig7.jpg?400| CMB constraints on the coupling between dark energy and dark matter. From [[http://inspirehep.net/record/1122522| this paper.]] }} | [{{ :fig7.jpg?400| CMB constraints on the coupling between dark energy and dark matter. From [[http://inspirehep.net/record/1122522| this paper.]] }}] |
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| Dark Energy is the enigmatic cause of the acceleration of the cosmic expansion. Since the discovery of acceleration in 1998, scientists are trying to understand the nature of the substance that drives the cosmic kinematics. The cosmological constant introduced by Einstein in 1917 is a possible explanation, but many others are still observationally acceptable. Among these, there are models that modify gravity, or that depend on extra-dimensional physics, or are based on large-scale deviations from homogeneity. | Dark Energy is the enigmatic cause of the acceleration of the cosmic expansion. Since the discovery of acceleration in 1998, scientists are trying to understand the nature of the substance that drives the cosmic kinematics. The cosmological constant introduced by Einstein in 1917 is a possible explanation, but many others are still observationally acceptable. Among these, there are models that modify gravity, or that depend on extra-dimensional physics, or are based on large-scale deviations from homogeneity. |
| or even induces an [[http://adsabs.harvard.edu/abs/2013arXiv1303.6878W|inversion of the cosmic expansion]]. | or even induces an [[http://adsabs.harvard.edu/abs/2013arXiv1303.6878W|inversion of the cosmic expansion]]. |
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| We have also worked on Hordenski models of modified gravity and looked at their [[http://arxiv.org/abs/1405.7004|impact on both the primordial and lensing B mode polarization ]] of the [[cmb|CMB]] . | We have also worked on Horndeski models of modified gravity and looked at their [[http://arxiv.org/abs/1405.7004|impact on both the primordial and lensing B mode polarization ]] of the [[cmb|CMB]] . |
