151051 20251017144632.0 doi 10.1016/j.dark.2022.101001 sideral 128434 ART-2022-128434 eng Navarro, P. Wide-band full-wave electromagnetic modal analysis of the coupling between dark-matter axions and photons in microwave resonators 2022 Access copy available to the general public Unrestricted The electromagnetic coupling axion–photon in a microwave cavity is revisited with the Boundary Integral-Resonant Mode Expansion (BI-RME) 3D technique. Such full-wave modal technique has been applied for the rigorous analysis of the excitation of a microwave cavity with an axion field. In this scenario, the electromagnetic field generated by the axion–photon coupling can be assumed to be driven by equivalent electrical charge and current densities. These densities have been inserted in the general BI-RME 3D equations, which express the RF electromagnetic field existing within a cavity as an integral involving the Dyadic Green''s functions of the cavity (under Coulomb gauge) as well as such densities. This method is able to take into account any arbitrary spatial and temporal variation of both magnitude and phase of the axion field. Next, we have obtained a simple network driven by the axion current source, which represents the coupling between the axion field and the resonant modes of the cavity. With this approach, it is possible to calculate the extracted and dissipated RF power as a function of frequency along a broad band and without Cauchy–Lorentz approximations, obtaining the spectrum of the electromagnetic field generated in the cavity, and dealing with modes relatively close to the axion resonant mode. Moreover, with this technique we have a complete knowledge of the signal extracted from the cavity, not only in magnitude but also in phase. This can be an interesting issue for future analysis where the axion phase is an important parameter. info:eu-repo/grantAgreement/ES/AEI/BES-2017-079787 info:eu-repo/grantAgreement/ES/AEI/PID2019-108122GB-C32 info:eu-repo/grantAgreement/EUR/ERC-2018-StG-802836-AxScale info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2016-76978-C3-2-P info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 5.5 2022 ASTRONOMY & ASTROPHYSICS 13 / 69 = 0.188 2022 Q1 T1 1.431 2022 Space and Planetary Science 2022 Q1 Astronomy and Astrophysics 2022 Q1 9.4 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Gimeno, Benito Álvarez Melcón, A. Arguedas Cuendis, S. Cogollos, C. Díaz-Morcillo, A. Gallego, J.D. García Barceló, J.M. Golm, J. Irastorza, I.G. Universidad de Zaragoza (orcid)0000-0003-1163-1687 Lozano Guerrero, A.J. Peña Garay, C. 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 36 (2022), 101001 [14 pp.] Phys. dark universe Physics of the Dark Universe 2212-6864 1154760 http://zaguan.unizar.es/record/151051/files/texto_completo.pdf Versión publicada 2912498 http://zaguan.unizar.es/record/151051/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:151051 articulos driver 2025-10-17-14:27:06 ARTICLE