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Electromagnetic Conversion into Kinetic and Thermal Energies
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Stockholm University, Faculty of Science, Department of Astronomy. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC). School of Natural Sciences and Medicine, Ilia State University, Georgia; McWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University, USA.ORCID iD: 0000-0002-7304-021X
Number of Authors: 22023 (English)In: Entropy, E-ISSN 1099-4300, Vol. 25, no 9, article id 1270Article in journal (Refereed) Published
Abstract [en]

The conversion of electromagnetic energy into magnetohydrodynamic energy occurs when the electric conductivity changes from negligible to finite values. This process is relevant during the epoch of reheating in the early universe at the end of inflation and before the emergence of the radiation-dominated era. We find that the conversion into kinetic and thermal energies is primarily the result of electric energy dissipation, while magnetic energy only plays a secondary role in this process. This means that since electric energy dominates over magnetic energy during inflation and reheating, significant amounts of electric energy can be converted into magnetohydrodynamic energy when conductivity emerges before the relevant length scales become stable.

Place, publisher, year, edition, pages
2023. Vol. 25, no 9, article id 1270
Keywords [en]
electric energy, cosmological inflation, emergence of conductivity
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:su:diva-223211DOI: 10.3390/e25091270ISI: 001078629400001PubMedID: 37761569Scopus ID: 2-s2.0-85172256374OAI: oai:DiVA.org:su-223211DiVA, id: diva2:1809862
Available from: 2023-11-06 Created: 2023-11-06 Last updated: 2023-11-06Bibliographically approved

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Brandenburg, Axel

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Nordic Institute for Theoretical Physics (Nordita)Department of AstronomyThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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