| Naslov: | Classical constant electric fields and the Schwinger effect in de Sitter |
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| Avtorji: | ID Bastero-Gil, Mar (Avtor)
ID Ferraz, Paulo B. (Avtor)
ID Torres Manso, António (Avtor)
ID Ubaldi, Lorenzo, Institut "Jožef Stefan" (Avtor)
ID Vega-Morales, Roberto (Avtor) |
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| Datoteke: |  URL - Izvorni URL, za dostop obiščite https://iopscience.iop.org/article/10.1088/1475-7516/2026/04/040
 PDF - Predstavitvena datoteka, prenos (1,17 MB)
MD5: 5175528974B12BB96DE21D5AF81202AF
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| Jezik: | Angleški jezik |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: |  IJS - Institut Jožef Stefan
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| Povzetek: | We study constant classical electric fields and the Schwinger effect in de Sitter space, with potential implications for magnetogenesis and inflationary dark matter production. Treating the photon as a dynamical field, we show that sustaining a constant electric field in de Sitter requires a tachyonic photon mass of order the Hubble scale. This observation has physical implications, as it alters the infrared behaviour of the induced Schwinger current. Using an on-shell renormalization condition consistent with a tachyonic photon, we recompute the current for charged fermions and scalars, finding it to be finite and positive even in the massless limit of the charge carriers, contrary to earlier results in the literature predicting a puzzling negative IR divergence. For scalars, we include a non-minimal coupling to the Ricci curvature, enabling us to analyze the conformal limit, where the current closely matches that of charged fermions. |
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| Ključne besede: | Schwinger effect, de Sitter space, magnetogenesis |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Poslano v recenzijo: | 13.11.2025 |
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| Datum sprejetja članka: | 17.02.2026 |
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| Datum objave: | 14.04.2026 |
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| Založnik: | IOP Publishing Ltd on behalf of Sissa Medialab |
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| Leto izida: | 2026 |
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| Št. strani: | str. 1-36 |
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| Številčenje: | Vol. 2026, iss. 4, [article no.] 040 |
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| PID: | 20.500.12556/DiRROS-29971  |
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| UDK: | 53 |
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| ISSN pri članku: | 1475-7516 |
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| DOI: | 10.1088/1475-7516/2026/04/040 |
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| COBISS.SI-ID: | 281118211 |
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| Avtorske pravice: | © 2026 The Author(s). |
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| Opomba: | Nasl. z nasl. zaslona;
Opis vira z dne 10. 6. 2026;
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| Datum objave v DiRROS: | 10.06.2026 |
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| Število ogledov: | 91 |
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| Število prenosov: | 61 |
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| Metapodatki: |    |
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