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| Verfasst von: | Viermann, Celia [VerfasserIn]  |
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| | Sparn, Marius [VerfasserIn] |
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| | Liebster, Nikolas [VerfasserIn] |
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| | Hans, Maurus [VerfasserIn] |
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| | Kath, Elinor [VerfasserIn] |
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| | Parra-López, Álvaro [VerfasserIn] |
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| | Tolosa-Simeón, Mireia [VerfasserIn] |
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| | Sánchez-Kuntz, Natalia [VerfasserIn] |
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| | Haas, Tobias [VerfasserIn] |
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| | Strobel, Helmut [VerfasserIn] |
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| | Flörchinger, Stefan [VerfasserIn] |
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| | Oberthaler, Markus K. [VerfasserIn] |
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| Titel: | Quantum field simulator for dynamics in curved spacetime |
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| Verf.angabe: | Celia Viermann, Marius Sparn, Nikolas Liebster, Maurus Hans, Elinor Kath, Álvaro Parra-López, Mireia Tolosa-Simeón, Natalia Sánchez-Kuntz, Tobias Haas, Helmut Strobel, Stefan Floerchinger, Markus K. Oberthaler |
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| E-Jahr: | 2022 |
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| Jahr: | 9 November 2022 |
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| Umfang: | 8 S. |
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| Fussnoten: | Gesehen am 12.12.2022 |
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| Titel Quelle: | Enthalten in: Nature <London> |
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| Ort Quelle: | London [u.a.] : Nature Publ. Group, 1869 |
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| Jahr Quelle: | 2022 |
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| Band/Heft Quelle: | 611(2022), 7935, Seite 260-267 |
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| ISSN Quelle: | 1476-4687 |
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| Abstract: | In most cosmological models, rapid expansion of space marks the first moments of the Universe and leads to the amplification of quantum fluctuations1. The description of subsequent dynamics and related questions in cosmology requires an understanding of the quantum fields of the standard model and dark matter in curved spacetime. Even the reduced problem of a scalar quantum field in an explicitly time-dependent spacetime metric is a theoretical challenge2-5, and thus a quantum field simulator can lead to insights. Here we demonstrate such a quantum field simulator in a two-dimensional Bose-Einstein condensate with a configurable trap6,7 and adjustable interaction strength to implement this model system. We explicitly show the realization of spacetimes with positive and negative spatial curvature by wave-packet propagation and observe particle-pair production in controlled power-law expansion of space, using Sakharov oscillations to extract amplitude and phase information of the produced state. We find quantitative agreement with analytical predictions for different curvatures in time and space. This benchmarks and thereby establishes a quantum field simulator of a new class. In the future, straightforward upgrades offer the possibility to enter unexplored regimes that give further insight into relativistic quantum field dynamics. |
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| DOI: | doi:10.1038/s41586-022-05313-9 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.1038/s41586-022-05313-9 |
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| | Volltext: https://www.nature.com/articles/s41586-022-05313-9 |
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| | DOI: https://doi.org/10.1038/s41586-022-05313-9 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | Cosmology |
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| | Quantum simulation |
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| | Theoretical particle physics |
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| | Ultracold gases |
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| K10plus-PPN: | 1826764615 |
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| Verknüpfungen: | → Zeitung |
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Quantum field simulator for dynamics in curved spacetime / Viermann, Celia [VerfasserIn]; 9 November 2022 (Online-Ressource)
