Elastic wavepackets crossing a space-time interface
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866915091307298816 |
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| author | Delory, Alexandre Prada, Claire Lanoy, Maxime Eddi, Antonin Fink, Mathias Lemoult, Fabrice |
| author_facet | Delory, Alexandre Prada, Claire Lanoy, Maxime Eddi, Antonin Fink, Mathias Lemoult, Fabrice |
| contents | The interaction between waves and evolving media challenges traditional conservation laws. We experimentally investigate the behavior of elastic wave packets crossing a moving interface that separates two media with distinct propagation properties, observing the non-conservation of wavelength and frequency. Our experimental setup employs an elastic strip whose local stretching can be dynamically altered by pulling one end at a constant velocity. By demonstrating that this dynamic configuration creates a spatio-temporal interface traveling along the strip, we confirm theoretical predictions regarding observed shifts when a wave packet crosses this interface. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_15100 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Elastic wavepackets crossing a space-time interface Delory, Alexandre Prada, Claire Lanoy, Maxime Eddi, Antonin Fink, Mathias Lemoult, Fabrice Classical Physics The interaction between waves and evolving media challenges traditional conservation laws. We experimentally investigate the behavior of elastic wave packets crossing a moving interface that separates two media with distinct propagation properties, observing the non-conservation of wavelength and frequency. Our experimental setup employs an elastic strip whose local stretching can be dynamically altered by pulling one end at a constant velocity. By demonstrating that this dynamic configuration creates a spatio-temporal interface traveling along the strip, we confirm theoretical predictions regarding observed shifts when a wave packet crosses this interface. |
| title | Elastic wavepackets crossing a space-time interface |
| topic | Classical Physics |
| url | https://arxiv.org/abs/2406.15100 |