Some Aspects of Dispersive Horizons: Lessons from Surface Waves
| Autor: | Gil Jannes, Philippe Maïssa, Germain Rousseaux, Jennifer Chaline |
|---|---|
| Přispěvatelé: | Laboratoire Jean Alexandre Dieudonné (JAD), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Hydrodynamique et Ecoulements Environnementaux (HydEE), Département Fluides, Thermique et Combustion (FTC), Institut Pprime (PPRIME), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Institut Pprime (PPRIME), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Physics
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] Superluminal motion Spacetime 010308 nuclear & particles physics Gravitational wave 01 natural sciences [PHYS.PHYS.PHYS-SPACE-PH]Physics [physics]/Physics [physics]/Space Physics [physics.space-ph] Surface tension General Relativity and Quantum Cosmology Classical mechanics Surface wave 0103 physical sciences 010306 general physics Background flow ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Analogue Gravity Phenomenology Analogue Gravity Phenomenology, Springer, pp.145-165, 2013, Lecture Notes in Physics 870, ⟨10.1007/978-3-319-00266-8_7⟩ Lecture Notes in Physics ISBN: 9783319002651 |
| DOI: | 10.1007/978-3-319-00266-8_7⟩ |
| Popis: | Hydrodynamic surface waves propagating on a moving background flow experience an effective curved space-time. We discuss experiments with gravity waves and capillary-gravity waves in which we study hydrodynamic black/white-hole horizons and the possibility of penetrating across them. Such possibility of penetration is due to the interaction with an additional "blue" horizon, which results from the inclusion of surface tension in the low-frequency gravity-wave theory. This interaction leads to a dispersive cusp beyond which both horizons completely disappear. We speculate the appearance of high-frequency "superluminal" corrections to be a universal characteristic of analogue gravity systems, and discuss their relevance for the trans-Planckian problem. We also discuss the role of Airy interference in hybridising the incoming waves with the flowing background (the effective spacetime) and blurring the position of the black/white-hole horizon. |
| Databáze: | OpenAIRE |
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