Zobrazeno 1 - 10
of 5 369
pro vyhledávání: '"INTERACTING DARK-MATTER"'
Autor:
Rosenlyst, Martin
We show that the mass of a self-interacting dark matter candidate, specifically a Dirac fermion, can be generated by composite dynamics, with a light scalar mediator emerging alongside the Higgs itself as composite particles. These novel models natur
Externí odkaz:
http://arxiv.org/abs/2412.19371
Autor:
Zeng, Zhichao Carton, Peter, Annika H. G., Du, Xiaolong, Benson, Andrew, Li, Jiaxuan, Mace, Charlie, Yang, Shengqi
Dark matter halos with self-interacting dark matter (SIDM) experience a unique evolutionary phenomenon, in that their central regions eventually collapse to high density through the runaway gravothermal process after initially forming a large and low
Externí odkaz:
http://arxiv.org/abs/2412.14621
The nature of dark matter is poorly constrained on subgalactic scales. Alternative models to cold dark matter, such as warm dark matter or self-interacting dark matter, could produce very different dark haloes on these scales. One of the few known da
Externí odkaz:
http://arxiv.org/abs/2411.08565
Direct-detection searches for dark matter are insensitive to dark matter particles that have large interactions with ordinary matter, which are stopped in the atmosphere or the Earth's crust before reaching terrestrial detectors. We use ``dark'' cali
Externí odkaz:
http://arxiv.org/abs/2412.13131
Autor:
Gómez, Nicolás, Castillo, Andrés
We consider an atlas of leptophilic models with non-universal charges that combine the quantum numbers \((L_e - L_{\mu})\) and \((L_{\mu} - L_{\tau})\) in various realizations. We explore diverse manifestations of the atlas to understand their impact
Externí odkaz:
http://arxiv.org/abs/2408.15536
Self-interacting dark matter (SIDM) can address the small-scale anomalies and previous researches focused on such a SIDM heavier than GeV, for which the self-scattering cross-section is in the quantum resonance region and has a non-trivial velocity d
Externí odkaz:
http://arxiv.org/abs/2410.20645
Autor:
Roberts, M. Grant, Braff, Lila, Garg, Aarna, Profumo, Stefano, Jeltema, Tesla, O'Donnell, Jackson
Evidence for high-redshift supermassive black holes challenges standard scenarios for how such objects form in the early universe. Here, we entertain the possibility that a fraction of the cosmological dark matter could be ultra-strongly self interac
Externí odkaz:
http://arxiv.org/abs/2410.17480
Publikováno v:
JCAP 11 (2024) 034
We study the evolution of $k=-1$ FLRW cosmological models for two interacting Dark Matter-Dark Energy Models using dynamical system analysis. Since we are interested in late time evolution, the sign of the interaction term is chosen such that it faci
Externí odkaz:
http://arxiv.org/abs/2410.02261
The GD-1 stellar stream exhibits spur and gap structures that may result from a close encounter with a dense substructure. When interpreted as a dark matter subhalo, the perturber is denser than predicted in the standard cold dark matter (CDM) model.
Externí odkaz:
http://arxiv.org/abs/2409.19493
Observations of the velocity dispersion indicate a severe dark matter (DM) deficit in the ultra-diffuse galaxy, NGC1052-DF4 (DF4). The ultra-deep images obtained with the Gemini telescope, which has the deepest imaging data till now, confirm the pres
Externí odkaz:
http://arxiv.org/abs/2408.01724