Tunneling method for Hawking quanta in analogue gravity
Analogue Hawking radiation from acoustic horizons is now a well-established phenomenon, both theoretically and experimentally. Its persistence, despite the modified dispersion relations characterising analogue models, has been crucial in advancing our understanding of the robustness of this phenomen...
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Académie des sciences
2025-02-01
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| 叢編: | Comptes Rendus. Physique |
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| 在線閱讀: | https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.239/ |
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| author | Del Porro, Francesco Liberati, Stefano Schneider, Marc |
| author_facet | Del Porro, Francesco Liberati, Stefano Schneider, Marc |
| author_sort | Del Porro, Francesco |
| collection | DOAJ |
| description | Analogue Hawking radiation from acoustic horizons is now a well-established phenomenon, both theoretically and experimentally. Its persistence, despite the modified dispersion relations characterising analogue models, has been crucial in advancing our understanding of the robustness of this phenomenon against ultraviolet modifications of our spacetime description. However, previous theoretical approaches, such as the Bogoliubov transformation relating asymptotic states, have somewhat lacked a straightforward physical intuition regarding the origin of this robustness and its limits of applicability. To address this, we revisit analogue Hawking radiation using the tunneling method. We present a unified treatment that allows us to consider flows with and without acoustic horizons and with superluminal or subluminal dispersion relations. This approach clarifies the fundamental mechanism behind the resilience of Hawking radiation in these settings and explains the puzzling occurrence of excitations even in subcritical (supercritical) flows with subluminal (superluminal) dispersion relations. |
| format | Article |
| id | doaj-art-e2f32bcdee4d4400a9fb6301474edb55 |
| institution | Matheson Library |
| issn | 1878-1535 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Physique |
| spelling | doaj-art-e2f32bcdee4d4400a9fb6301474edb552025-08-01T07:38:27ZengAcadémie des sciencesComptes Rendus. Physique1878-15352025-02-0112710.5802/crphys.23910.5802/crphys.239Tunneling method for Hawking quanta in analogue gravityDel Porro, Francesco0https://orcid.org/0000-0001-9599-9125Liberati, Stefano1https://orcid.org/0000-0002-7632-7443Schneider, Marc2https://orcid.org/0000-0001-5727-7850IFPU - Institute for Fundamental Physics of the Universe, Via Beirut 2, 34014 Trieste, Italy; INFN Sezione di Trieste, Via Valerio 2, 34127 Trieste, Italy; SISSA, Via Bonomea 265, 34136 Trieste, ItalyIFPU - Institute for Fundamental Physics of the Universe, Via Beirut 2, 34014 Trieste, Italy; INFN Sezione di Trieste, Via Valerio 2, 34127 Trieste, Italy; SISSA, Via Bonomea 265, 34136 Trieste, ItalyIFPU - Institute for Fundamental Physics of the Universe, Via Beirut 2, 34014 Trieste, Italy; INFN Sezione di Trieste, Via Valerio 2, 34127 Trieste, Italy; SISSA, Via Bonomea 265, 34136 Trieste, ItalyAnalogue Hawking radiation from acoustic horizons is now a well-established phenomenon, both theoretically and experimentally. Its persistence, despite the modified dispersion relations characterising analogue models, has been crucial in advancing our understanding of the robustness of this phenomenon against ultraviolet modifications of our spacetime description. However, previous theoretical approaches, such as the Bogoliubov transformation relating asymptotic states, have somewhat lacked a straightforward physical intuition regarding the origin of this robustness and its limits of applicability. To address this, we revisit analogue Hawking radiation using the tunneling method. We present a unified treatment that allows us to consider flows with and without acoustic horizons and with superluminal or subluminal dispersion relations. This approach clarifies the fundamental mechanism behind the resilience of Hawking radiation in these settings and explains the puzzling occurrence of excitations even in subcritical (supercritical) flows with subluminal (superluminal) dispersion relations.https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.239/Analogue gravityParticle creationHawking effectTunneling methodGeneral dispersion relations |
| spellingShingle | Del Porro, Francesco Liberati, Stefano Schneider, Marc Tunneling method for Hawking quanta in analogue gravity Comptes Rendus. Physique Analogue gravity Particle creation Hawking effect Tunneling method General dispersion relations |
| title | Tunneling method for Hawking quanta in analogue gravity |
| title_full | Tunneling method for Hawking quanta in analogue gravity |
| title_fullStr | Tunneling method for Hawking quanta in analogue gravity |
| title_full_unstemmed | Tunneling method for Hawking quanta in analogue gravity |
| title_short | Tunneling method for Hawking quanta in analogue gravity |
| title_sort | tunneling method for hawking quanta in analogue gravity |
| topic | Analogue gravity Particle creation Hawking effect Tunneling method General dispersion relations |
| url | https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.239/ |
| work_keys_str_mv | AT delporrofrancesco tunnelingmethodforhawkingquantainanaloguegravity AT liberatistefano tunnelingmethodforhawkingquantainanaloguegravity AT schneidermarc tunnelingmethodforhawkingquantainanaloguegravity |