dc.creator | Yunis, Rafael Ignacio | |
dc.creator | Argüelles, Carlos Raúl | |
dc.creator | Lopez Nacir, Diana Laura | |
dc.date.accessioned | 2021-11-04T16:40:01Z | |
dc.date.accessioned | 2022-10-14T22:02:24Z | |
dc.date.available | 2021-11-04T16:40:01Z | |
dc.date.available | 2022-10-14T22:02:24Z | |
dc.date.created | 2021-11-04T16:40:01Z | |
dc.date.issued | 2020-09 | |
dc.identifier | Yunis, Rafael Ignacio; Argüelles, Carlos Raúl; Lopez Nacir, Diana Laura; Boltzmann hierarchies for self-interacting warm dark matter scenarios; IOP Publishing; Journal of Cosmology and Astroparticle Physics; 2020; 9; 9-2020; 1-49 | |
dc.identifier | 1475-7516 | |
dc.identifier | http://hdl.handle.net/11336/146035 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4311681 | |
dc.description.abstract | We provide a general framework for self-interacting warm dark matter (WDM) in cosmological perturbations, by deriving from first principles a Boltzmann hierarchy which retains certain independence from a particular interaction Lagrangian. We consider elastic interactions among the massive particles, and obtain a hierarchy which is more general than the ones usually obtained for non-relativistic (as for cold DM) or for ultra-relativistic (as for neutrinos) approximations. The more general momentum-dependent kernel integrals in the Boltzmann collision terms, are explicitly calculated for different field-mediator models, including examples of a scalar field or a massive vector field. As an application, we study the evolution of the interaction rate per particle under the relaxation time approximation, and assess when a given self-interaction is relevant in comparison with the Hubble expansion rate. Our framework aims to be a useful tool to evaluate DM self-interaction effects in the linear power spectrum, with the consequent imprints on non-linear scales of structure formation. | |
dc.language | eng | |
dc.publisher | IOP Publishing | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1475-7516/2020/09/041 | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/1475-7516/2020/09/041 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject | COSMOLOGICAL NEUTRINOS | |
dc.subject | COSMOLOGICAL PERTURBATION THEORY | |
dc.subject | DARK MATTER THEORY | |
dc.subject | PARTICLE PHYSICS - COSMOLOGY CONNECTION | |
dc.title | Boltzmann hierarchies for self-interacting warm dark matter scenarios | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |