Zobrazeno 1 - 10
of 4 062
pro vyhledávání: '"Gravitinos"'
We investigate the effects of non-thermally produced dark matter on large-scale structure formation, focusing on the gravitino dark matter. Our analysis shows that large-scale structure measurements from the SDSS LRG data offer a promising approach t
Externí odkaz:
http://arxiv.org/abs/2408.10585
In a previous work [K.A. Meissner and H. Nicolai, Eur. Phys. J. C {\bf 84}, 269 (2024)], two of the present authors have suggested possible experimental ways to search for stable supermassive particles with electric charges of $\cO(1)$ in upcoming un
Externí odkaz:
http://arxiv.org/abs/2407.04883
Autor:
Bourakadi, K. El, Otalora, G., Burton-Villalobos, A., Chakir, H., Ferricha-Alami, M., Bennai, M.
In this paper, we investigate D-term inflation within the framework of supergravity, employing the minimal K\"{a}hler potential. Following previous studies that revealed that this model can overcome the $\eta$-problem found in F-term models, we explo
Externí odkaz:
http://arxiv.org/abs/2406.18828
Autor:
El Bourakadi, K.1,2 (AUTHOR) k.elbourakadi@yahoo.com, Otalora, G.1 (AUTHOR) giovanni.otalora@academicos.uta.cl, Burton-Villalobos, A.1 (AUTHOR) andres.burton.villalobos@alumnos.uta.cl, Chakir, H.2 (AUTHOR) chakir10@gmail.com, Ferricha-Alami, M.3 (AUTHOR) ferrichaalami@yahoo.fr, Bennai, M.3 (AUTHOR) mdbennai@yahoo.fr
Publikováno v:
European Physical Journal C -- Particles & Fields. Nov2024, Vol. 84 Issue 11, p1-13. 13p.
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 11, Pp 1-13 (2024)
Abstract In this paper, we investigate D-term inflation within the framework of supergravity, employing the minimal Kähler potential. Following previous studies that revealed that this model can overcome the $$\eta $$ η -problem found in F-term mod
Externí odkaz:
https://doaj.org/article/c70145abfc40402da127ee7f66608fe7
We examine possible experimental signatures that may be exploited to search for stable supermassive particles with electric charges of $O(1)$ in future underground experiments, and the upcoming JUNO experiment in particular. The telltale signal provi
Externí odkaz:
http://arxiv.org/abs/2306.12797
Autor:
Meissner, Krzysztof A.1 (AUTHOR) meissner@fuw.edu.pl, Nicolai, Hermann2 (AUTHOR)
Publikováno v:
European Physical Journal C -- Particles & Fields. Mar2024, Vol. 84 Issue 3, p1-5. 5p.
Autor:
Krzysztof A. Meissner, Hermann Nicolai
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 3, Pp 1-5 (2024)
Abstract We examine possible experimental signatures that may be exploited to search for stable supermassive particles with electric charges of $${{\mathcal {O}}}(1)$$ O ( 1 ) in future underground experiments, and the upcoming JUNO experiment in par
Externí odkaz:
https://doaj.org/article/a14d427099b0423ebd2ce13a6f794443
Gravitinos can inherit a non-relativistic dispersion relation while propagating in a background breaking both supersymmetry and Lorentz symmetry spontaneously. This is because the longitudinal mode velocity is controlled by the sound speed in the bac
Externí odkaz:
http://arxiv.org/abs/2105.03784
Autor:
Dudas, Emilian, Garcia, Marcos A. G., Mambrini, Yann, Olive, Keith A., Peloso, Marco, Verner, Sarunas
Publikováno v:
Phys. Rev. D 103, 123519 (2021)
It has been argued that supergravity models of inflation with vanishing sound speeds, $c_s$, lead to an unbounded growth in the production rate of gravitinos. We consider several models of inflation to delineate the conditions for which $c_s = 0$. In
Externí odkaz:
http://arxiv.org/abs/2104.03749