Electromagnetic plasma waves in Big Bounce and Big Crunch cosmologies
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866916728544428032 |
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| author | Asenjo, Felipe A. |
| author_facet | Asenjo, Felipe A. |
| contents | We study the exact dynamics of electromagnetic waves in cold electron-positron plasma in the simplest background of Big Bounce and Big Crunch cosmologies. We show that these waves are described by a Mathieu equation in a Big Bounce cosmology, which opens the possibility of electromagnetic wave amplification due to the cosmological constant in this Universe. On the contrary, in a Big Crunch cosmology, electromagnetic plasma waves are described by a modified Mathieu equation. In both cases, the features (grow/collapse) of the Universes imprint similar characteristics in the temporal evolution of these waves. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2505_05718 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Electromagnetic plasma waves in Big Bounce and Big Crunch cosmologies Asenjo, Felipe A. Plasma Physics General Relativity and Quantum Cosmology We study the exact dynamics of electromagnetic waves in cold electron-positron plasma in the simplest background of Big Bounce and Big Crunch cosmologies. We show that these waves are described by a Mathieu equation in a Big Bounce cosmology, which opens the possibility of electromagnetic wave amplification due to the cosmological constant in this Universe. On the contrary, in a Big Crunch cosmology, electromagnetic plasma waves are described by a modified Mathieu equation. In both cases, the features (grow/collapse) of the Universes imprint similar characteristics in the temporal evolution of these waves. |
| title | Electromagnetic plasma waves in Big Bounce and Big Crunch cosmologies |
| topic | Plasma Physics General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2505.05718 |