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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.08163 |
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| _version_ | 1866909862681640960 |
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| author | Mosbech, Markus R. Casas, Santiago Lesgourgues, Julien Linde, Dennis Dizgah, Azadeh Moradinezhad Radermacher, Christian Truong, Jannik |
| author_facet | Mosbech, Markus R. Casas, Santiago Lesgourgues, Julien Linde, Dennis Dizgah, Azadeh Moradinezhad Radermacher, Christian Truong, Jannik |
| contents | We apply the Effective Field Theory of Large Scale Structure (EFTofLSS) to non-standard models of dark matter with suppressed small-scale structure imprinted by early-time physics, here exemplified by interacting dark matter (IDM) coupled to standard model neutrinos, and cross-check that the EFTofLSS has no trouble replicating the real-space halo-halo power spectrum from N-body simulations. We perform forecasts for a DESI ELG-like experiment using the redshift-space power spectrum and find that, under very conservative priors on these parameters, the EFTofLSS is not expected to yield strong constraints on dark matter interactions. However, with a better understanding of the evolution of counterterms and stochastic terms with redshift, realistic IDM models could in principle be detected using the full-shape power spectrum analysis of such a spectroscopic galaxy survey. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_08163 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | DESI forecast for Dark Matter-Neutrino interactions using EFTofLSS Mosbech, Markus R. Casas, Santiago Lesgourgues, Julien Linde, Dennis Dizgah, Azadeh Moradinezhad Radermacher, Christian Truong, Jannik Cosmology and Nongalactic Astrophysics We apply the Effective Field Theory of Large Scale Structure (EFTofLSS) to non-standard models of dark matter with suppressed small-scale structure imprinted by early-time physics, here exemplified by interacting dark matter (IDM) coupled to standard model neutrinos, and cross-check that the EFTofLSS has no trouble replicating the real-space halo-halo power spectrum from N-body simulations. We perform forecasts for a DESI ELG-like experiment using the redshift-space power spectrum and find that, under very conservative priors on these parameters, the EFTofLSS is not expected to yield strong constraints on dark matter interactions. However, with a better understanding of the evolution of counterterms and stochastic terms with redshift, realistic IDM models could in principle be detected using the full-shape power spectrum analysis of such a spectroscopic galaxy survey. |
| title | DESI forecast for Dark Matter-Neutrino interactions using EFTofLSS |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2410.08163 |