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Author  |
Corelli, F.; Utrilla Gines, E.; Cannizzaro, E.; Caputo, A.; Witte, S.J. |
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Title |
Simulating axion electrodynamics in magnetized plasmas: Energy transfer in the inhomogeneous and strongly varying limit |
Type |
Journal Article |
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Year |
2026 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
114 |
Issue |
8 |
Pages |
083021 - 38pp |
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Abstract |
In this work, we study the electromagnetic response induced by axions in a magnetized plasma, focusing specifically on characterizing energy transfer and energy losses from the ambient axion field in highly inhomogeneous and strongly varying backgrounds. Using a suite of both frequency-domain and timedomain simulations, we solve for the efficiency of photon excitation in a rapidly varying background; the indirect excitation of Alfven modes, occurring when a Langmuir-Ordinary (LO) mode is resonantly excited near a combined cutoff-resonance of the dispersion relations of the LO and Alfven modes; and the excitation of electric fields in small localized plasma underdensities. We identify a particularly interesting regime in which energy can be transferred into subluminal plasma modes (omega < k) with an efficiency greater than that of superluminal modes (omega > k). Our results highlight a variety of less conventional ways in which axions (and other light degrees of freedom that mix with electromagnetism, such as dark photons or gravitons) can interact in extreme astrophysical environments. |
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Address |
[Corelli, Fabrizio; Caputo, Andrea] Sapienza Univ Roma, Dipartimento Fis, Sez INFN Roma1, Piazzale Aldo Moro 5, I-00185 Rome, Italy, Email: fabrizio.corelli@aei.mpg.de; |
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Publisher |
Amer Physical Soc |
Place of Publication |
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Language |
English |
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Original Title |
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Series Volume |
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Edition |
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ISSN |
2470-0010 |
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Notes |
WOS:001906973200001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
7493 |
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