Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Ariel Arza"'
Autor:
Ariel Arza
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 3, Pp 1-5 (2019)
Abstract We study the propagation of photons in a homogeneous axion dark matter background. When the axion decay into two photons is stimulated, the photon field exhibits a parametric instability in a small bandwidth centered on one half of the axion
Externí odkaz:
https://doaj.org/article/c1f85d31dad046638ef5d4f13cda0b1d
Autor:
Ariel Arza, Elisa Todarello
Publikováno v:
Symmetry, Vol 13, Iss 11, p 2150 (2021)
The axion is a dark matter candidate arising from the spontaneous breaking of the Peccei–Quinn symmetry, introduced to solve the strong CP problem. It has been shown that radio/microwave radiation sent out to space is backscattered in the presence
Externí odkaz:
https://doaj.org/article/cc33611686e54881a82e622edd80eb36
The effects of an external time-dependent magnetic field in the conversion probability of photon-to-axion-like particles are studied. Our findings show that for a certain time regime, the amplitude of the produced axion-like field can be enlarged wit
Externí odkaz:
http://arxiv.org/abs/1608.03458
Publikováno v:
International Journal of Modern Physics A. 37
The existence of hidden sectors weakly coupled to the visible one has been extensively studied as a way to extend the Standard Model (SM) and to provide a good dark matter candidate. In this work we analyze two models in which gauge and scalar hidden
Publikováno v:
Physical Review
We demonstrate that ultralight axion dark matter with a coupling to photons induces an oscillating global terrestrial magnetic field signal in the presence of the background geomagnetic field of the Earth. This signal is similar in structure to that
Autor:
Ariel Arza
Publikováno v:
Physical Review
Taking a two interacting scalar toy model with interaction term $g\phi\chi^2$, we study the production of $\chi$ particles coming from the decay of an asymptotic and highly occupied beam of $\phi$ particles. We perform a nonperturbative analysis comi
Autor:
Elisa Todarello, Ariel Arza
Publikováno v:
Symmetry, 13 (11), Art.-Nr.: 2150
Symmetry, Vol 13, Iss 2150, p 2150 (2021)
Symmetry
Volume 13
Issue 11
Symmetry, Vol 13, Iss 2150, p 2150 (2021)
Symmetry
Volume 13
Issue 11
The axion is a dark matter candidate arising from the spontaneous breaking of the Peccei–Quinn symmetry, introduced to solve the strong CP problem. It has been shown that radio/microwave radiation sent out to space is backscattered in the presence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85e321d6729152bedee61bc62714cbd8
https://publikationen.bibliothek.kit.edu/1000142282/142477940
https://publikationen.bibliothek.kit.edu/1000142282/142477940
Axion--photon interactions can lead to an enhancement of the electromagnetic field by parametric resonance in the presence of a cold axion background, for modes with a frequency close to half the axion mass. In this paper, we study the role of the ax
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::773f13b03a50f97de4e250461be13b21
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2021:070
We investigate a scenario where the dark matter of the Universe is made from very light hidden photons transforming under a $Z_{2}$-symmetry. In contrast to the usual situation, kinetic mixing is forbidden by the symmetry and the dark photon interact
Autor:
Pierre Sikivie, Ariel Arza
Publikováno v:
Physical Review Letters
Electromagnetic radiation with angular frequency equal to half the axion mass stimulates the decay of cold dark matter axions and produces an echo, i.e. faint electromagnetic radiation traveling in the opposite direction. We propose to search for axi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28181f3554fea9687cfbf7bd09747997
http://arxiv.org/abs/1902.00114
http://arxiv.org/abs/1902.00114