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Yashar Akrami

Researcher at École Normale Supérieure

Publications -  119
Citations -  23365

Yashar Akrami is an academic researcher from École Normale Supérieure. The author has contributed to research in topics: Cosmic microwave background & Planck. The author has an hindex of 49, co-authored 103 publications receiving 15346 citations. Previous affiliations of Yashar Akrami include University of Paris & Stockholm University.

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A spectre is haunting the cosmos: Quantum stability of massive gravity with ghosts

TL;DR: In this paper, a model that describes a massive graviton together with a remaining Boulware-Deser ghost mode was analyzed and it was shown that even ghostly theories of modified gravity can yield models that are viable at both classical and quantum levels and therefore they should not be ruled out.
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How well will ton-scale dark matter direct detection experiments constrain minimal supersymmetry?

TL;DR: In this article, the authors examined the prospects for further constraining the Constrained Minimal Supersymmetric Standard Model (CMSSM) with future ton-scale direct detection experiments.
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Euclid preparation. XXIX. Forecasts for ten different higher-order weak lensing statistics

Euclid Collaboration V. Ajani, +651 more
TL;DR: Higher-order statistics (HOS) developed by independent teams now outperform standard two-point estimators in terms of statistical precision thanks to their sensitivity to the non-Gaussian features of large-scale structure as discussed by the authors .
Posted Content

Ultra-large-scale approximations and galaxy clustering: debiasing constraints on cosmological parameters

TL;DR: In this article, a debiasing method is proposed to recover true cosmologies without running the full parameter estimation pipeline with exact theoretical calculations, which can therefore provide a fast way of obtaining accurate values of cosmological parameters and estimates of exact posterior probability distributions from ultra-large scale observations.
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On nonlocally interacting metrics, and a simple proposal for cosmic acceleration

TL;DR: In this paper, a nonlocal modification to general relativity (GR) on large scales was proposed, which provides a model of late-time cosmic acceleration in the absence of the cosmological constant and with the same number of free parameters as in standard cosmology.