Kaniadakis entropy-based characterization of IceCube PeV neutrino signals
Kaniadakis -thermostatistics is by now recognized as an effective paradigm to describe relativistic complex systems obeying power-law tailed distributions, as opposed to the classical (exponential-type) decay. It is founded on a non-extensive one-parameter generalization of the Bekenstein-Hawking en...
| Autores: | , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2023 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10459.1/464473 |
| Acesso em linha: | https://doi.org/10.1016/j.dark.2023.101342 https://hdl.handle.net/10459.1/464473 |
| Access Level: | acceso abierto |
| Palavra-chave: | Dark energy Dark matter IceCube neutrinos Kaniadakis entropy Yukawa coupling |
| Resumo: | Kaniadakis -thermostatistics is by now recognized as an effective paradigm to describe relativistic complex systems obeying power-law tailed distributions, as opposed to the classical (exponential-type) decay. It is founded on a non-extensive one-parameter generalization of the Bekenstein-Hawking entropy, which, in the cosmological framework, gives rise to modified Friedmann equations on the basis of the gravity-thermodynamic conjecture. Assuming the entropy associated with the apparent horizon of the Friedmann–Robertson–Walker (FRW) Universe follows Kaniadakis prescription, in this work we analyze the observed discrepancy between the present bound on the Dark Matter relic abundance and the IceCube high-energy (∼ 1 PeV) neutrinos. We show that this tension can be alleviated in the minimal model of Dark Matter decay with Kaniadakisgoverned Universe evolution, while still considering the 4-dimensional Yukawa coupling between Standard Model and Dark Matter particles. This argument phenomenologically supports the need for a Kaniadakislike generalization of the Boltzmann–Gibbs–Shannon entropy in the relativistic realm, opening new potential scenarios in high-energy astroparticle physics. |
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