[Émission phononique superradiante par l’ergorégion analogue de spin dans un condensat de Bose–Einstein à deux composantes]
Nous utilisons un point de vue de gravité analogique pour accéder à une compréhension physique des instabilités hydrodynamiques résultant de la présence de tourbillons quantiques dans des condensats atomiques à deux composantes et de leur relation avec les instabilités d’ergorégion d’objets massifs en rotation. En plus des instabilités localisées liées à la scission des tourbillons, on trouve des configurations présentant des modes dynamiquement instables qui s’étendent bien au-delà du coeur du tourbillon. Le processus de diffusion superradiante met alors en jeu l’émission de phonons dans une région beaucoup plus étendue, celle de l’ergorégion des modes de spin, et c’est dans ce cas que la physique ressemble le plus à celle des objets massifs en rotation. Nos résultats confirment le potentiel qu’ont les condensats à deux composantes à servir de modèles analogues d’espaces-temps en rotation dans différents régimes intéressants du point de vue de la gravitation.
We make use of an analog gravity perspective to obtain a physical understanding of hydrodynamic instabilities stemming from the presence of quantized vortices in two-component atomic condensates and of their relation to ergoregion instabilities of rotating massive objects in gravitation. In addition to the localized instabilities related to vortex splitting, configurations displaying dynamically unstable modes that extend well outside the vortex core are found. In this case, the superradiant scattering process involves phonon emission into the much wider ergoregion of spin modes, so the physics most closely resembles the one of rotating massive objects. Our results confirm the potential of two-component condensates as analog models of rotating space-times in different regimes of gravitational interest.
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Mot clés : Gravité analogique, superradiance, instabilité de l’ergorégion, tourbillons, condensats de Bose–Einstein à deux composantes
CC-BY 4.0
@article{CRPHYS_2023__24_S3_A8_0,
author = {Anna Berti and Luca Giacomelli and Iacopo Carusotto},
title = {Superradiant phononic emission from the analog spin ergoregion in a two-component {Bose{\textendash}Einstein} condensate},
journal = {Comptes Rendus. Physique},
publisher = {Acad\'emie des sciences, Paris},
year = {2023},
doi = {10.5802/crphys.145},
language = {en},
note = {Online first},
}
TY - JOUR AU - Anna Berti AU - Luca Giacomelli AU - Iacopo Carusotto TI - Superradiant phononic emission from the analog spin ergoregion in a two-component Bose–Einstein condensate JO - Comptes Rendus. Physique PY - 2023 PB - Académie des sciences, Paris N1 - Online first DO - 10.5802/crphys.145 LA - en ID - CRPHYS_2023__24_S3_A8_0 ER -
%0 Journal Article %A Anna Berti %A Luca Giacomelli %A Iacopo Carusotto %T Superradiant phononic emission from the analog spin ergoregion in a two-component Bose–Einstein condensate %J Comptes Rendus. Physique %D 2023 %I Académie des sciences, Paris %Z Online first %R 10.5802/crphys.145 %G en %F CRPHYS_2023__24_S3_A8_0
Anna Berti; Luca Giacomelli; Iacopo Carusotto. Superradiant phononic emission from the analog spin ergoregion in a two-component Bose–Einstein condensate. Comptes Rendus. Physique, Online first (2023), pp. 1-21. doi : 10.5802/crphys.145.
[1] Analogue gravity, Living Rev. Relativ., Volume 14 (2011) no. 1, pp. 1-159 | DOI | Zbl
[2] Experimental black-hole evaporation?, Phys. Rev. Lett., Volume 46 (1981) no. 21, pp. 1351-1353 | DOI
[3] Observation of negative-frequency waves in a water tank: a classical analogue to the Hawking effect?, New J. Phys., Volume 10 (2008) no. 5, 053015 | DOI
[4] Realization of a sonic black hole analog in a Bose–Einstein condensate, Phys. Rev. Lett., Volume 105 (2010) no. 24, 240401 | DOI
[5] Acoustic black hole in a stationary hydrodynamic flow of microcavity polaritons, Phys. Rev. Lett., Volume 114 (2015) no. 3, 036402 | DOI
[6] Fiber-optical analog of the event horizon, Science, Volume 319 (2008) no. 5868, pp. 1367-1370 | DOI
[7] Rotating black hole geometries in a two-dimensional photon superfluid, Optica, Volume 5 (2018) no. 9, pp. 1099-1103 | DOI
[8] Hawking radiation from ultrashort laser pulse filaments, Phys. Rev. Lett., Volume 105 (2010) no. 20, 203901 | DOI
[9] Measurement of stimulated Hawking emission in an analogue system, Phys. Rev. Lett., Volume 106 (2011) no. 2, 021302 | DOI
[10] Observation of noise correlated by the Hawking effect in a water tank, Phys. Rev. Lett., Volume 117 (2016) no. 12, 121301 | DOI
[11] Observation of quantum Hawking radiation and its entanglement in an analogue black hole, Nat. Phys., Volume 12 (2016) no. 10, pp. 959-965 | DOI
[12] Observation of thermal Hawking radiation and its temperature in an analogue black hole, Nature, Volume 569 (2019) no. 7758, pp. 688-691 | DOI
[13] Observation of stimulated Hawking radiation in an optical analogue, Phys. Rev. Lett., Volume 122 (2019) no. 1, 010404 | DOI
[14] Observation of the dynamical Casimir effect in a superconducting circuit, Nature, Volume 479 (2011) no. 7373, pp. 376-379 | DOI
[15] Acoustic analog to the dynamical Casimir effect in a Bose–Einstein condensate, Phys. Rev. Lett., Volume 109 (2012) no. 22, 220401 | DOI
[16] A rapidly expanding Bose-Einstein condensate: an expanding universe in the lab, Phys. Rev. X, Volume 8 (2018) no. 2, 021021 | DOI
[17] From cosmology to cold atoms: observation of Sakharov oscillations in a quenched atomic superfluid, Science, Volume 341 (2013) no. 6151, pp. 1213-1215 | DOI
[18] Phonon pair creation by inflating quantum fluctuations in an ion trap, Phys. Rev. Lett., Volume 123 (2019) no. 18, 180502 | DOI
[19] Analogue cosmological particle creation in an ultracold quantum fluid of light, Nat. Commun., Volume 13 (2022) no. 1, pp. 1-7 | DOI
[20] Quantum field simulator for dynamics in curved spacetime, Nature, Volume 611 (2022), pp. 260-264 | DOI
[21] Rotational superradiant scattering in a vortex flow, Nat. Phys., Volume 13 (2017) no. 9, pp. 833-836 | DOI
[22] Quantum analogue of a Kerr black hole and the Penrose effect in a Bose–Einstein condensate, Phys. Rev. B, Volume 99 (2019) no. 21, 214511 | DOI
[23] Amplification of waves from a rotating body, Nat. Phys., Volume 16 (2020) no. 10, pp. 1069-1073 | DOI
[24] Measurement of penrose superradiance in a photon superfluid, Phys. Rev. Lett., Volume 128 (2022) no. 1, 013901 | DOI
[25] Superradiance, Springer, 2020 | DOI
[26] On the ergoregion instability, Proc. R. Soc. Lond., Ser. A, Volume 364 (1978) no. 1717, pp. 211-226 | DOI | MR
[27] Ergosphere instability, Commun. Math. Phys., Volume 63 (1978) no. 3, pp. 243-255 | DOI | MR | Zbl
[28] A proof of Friedman’s ergosphere instability for scalar waves, Commun. Math. Phys., Volume 358 (2018) no. 2, pp. 437-520 | DOI | MR | Zbl
[29] Black-hole bomb and superradiant instabilities, Phys. Rev. D, Volume 70 (2004) no. 4, 044039 | DOI | MR
[30] Ergoregion instability of a rotating quantum system, Phys. Rev. D, Volume 97 (2018) no. 12, 124063 | DOI
[31] Understanding superradiant phenomena with synthetic vector potentials in atomic Bose–Einstein condensates, Phys. Rev. A, Volume 103 (2021) no. 4, 043309 | DOI | MR
[32] Vortices in a trapped dilute Bose–Einstein condensate, J. Phys. Cond. Matt., Volume 13 (2001) no. 12, R135 | DOI | Zbl
[33] Rotating trapped Bose–Einstein condensates, Rev. Mod. Phys., Volume 81 (2009) no. 2, pp. 647-691 | DOI
[34] Dissipative dynamics of a vortex state in a trapped Bose-condensed gas, Phys. Rev. A, Volume 60 (1999) no. 3, p. R1779-R1782 | DOI
[35] Vortex stability and persistent currents in trapped Bose gases, Phys. Rev. Lett., Volume 79 (1997) no. 12, p. 2164 | DOI
[36] Ergoregion instabilities in rotating two-dimensional Bose–Einstein condensates: Perspectives on the stability of quantized vortices, Phys. Rev. Res., Volume 2 (2020) no. 3, 033139 | DOI
[37] Quantum simulation of cosmic inflation in two-component Bose–Einstein condensates, Phys. Rev. A, Volume 70 (2004) no. 6, 063615 | DOI
[38] Massive Klein–Gordon equation from a Bose–Einstein-condensation-based analogue spacetime, Phys. Rev. D, Volume 72 (2005) no. 4, 044020 | DOI
[39] Analogue quantum gravity phenomenology from a two-component Bose–Einstein condensate, Class. Quant. Grav., Volume 23 (2006) no. 9, 3129 | DOI | MR | Zbl
[40] Black-hole lasing in coherently coupled two-component atomic condensates, Phys. Rev. A, Volume 96 (2017) no. 1, 013611 | DOI
[41] Observation of Massless and Massive Collective Excitations with Faraday Patterns in a Two-Component Superfluid, Phys. Rev. Lett., Volume 128 (2022) no. 21, 210401 | DOI
[42] Entangled phonons in atomic Bose–Einstein condensates, Phys. Rev. A, Volume 90 (2014) no. 3, 033607 | DOI
[43] Splitting of singly and doubly quantized composite vortices in two-component Bose–Einstein condensates, Phys. Rev. A, Volume 100 (2019) no. 3, 033615 | DOI
[44] Dissociation dynamics of singly charged vortices into half-quantum vortex pairs, Nat. Commun., Volume 3 (2012) no. 1, pp. 1-7 | DOI
[45] Half-quantum vortices in an antiferromagnetic spinor Bose–Einstein condensate, Phys. Rev. Lett., Volume 115 (2015) no. 1, 015301 | DOI
[46] Bose–Einstein Condensation and Superfluidity, International Series of Monographs on Physics, 164, Oxford University Press, 2016 | DOI
[47] A study of coherently coupled two-component Bose–Einstein condensates, Eur. Phys. J. D, Volume 67 (2013) no. 7, pp. 1-11 | Zbl
[48] Bose-Einstein condensates in atomic gases: simple theoretical results, Coherent atomic matter waves, Springer, 2001, pp. 1-136 | DOI
[49] Ergoregion instability: The hydrodynamic vortex, Phys. Rev. D, Volume 89 (2014) no. 12, 124008 | DOI
[50] Instability of ultracompact horizonless spacetimes, Phys. Rev. D, Volume 107 (2023) no. 4, 044035 | DOI | MR
[51] Efficient spectral computation of the stationary states of rotating Bose–Einstein condensates by preconditioned nonlinear conjugate gradient methods, J. Comput. Phys., Volume 343 (2017), pp. 92-109 | DOI | MR | Zbl
[52] Origin and evolution of the multiply quantized vortex instability, Phys. Rev. Res., Volume 4 (2022) no. 4, 043104 | DOI
[53] Time-dependent study of a black-hole laser in a flowing atomic condensate, Phys. Rev. A, Volume 94 (2016) no. 4, 043616 | DOI
[54] Nonlinear Evolution and Final Fate of Charged Anti–de Sitter Black Hole Superradiant Instability, Phys. Rev. Lett., Volume 116 (2016), 141102 | DOI
[55] Explosion and Final State of an Unstable Reissner-Nordström Black Hole, Phys. Rev. Lett., Volume 116 (2016) no. 14, 141101 | DOI
[56] Superradiant Instability and Backreaction of Massive Vector Fields around Kerr Black Holes, Phys. Rev. Lett., Volume 119 (2017) no. 4, 041101 | DOI
[57] Blasts of Light from Axions, Phys. Rev. Lett., Volume 122 (2019) no. 8, 081101 | DOI
[58] Vortex Formation in a Stirred Bose-Einstein Condensate, Phys. Rev. Lett., Volume 84 (2000) no. 5, pp. 806-809 | DOI
[59] Quantum fluids of light, Rev. Mod. Phys., Volume 85 (2013), pp. 299-366 | DOI
[60] Numerical observation of Hawking radiation from acoustic black holes in atomic Bose–Einstein condensates, New J. Phys., Volume 10 (2008) no. 10, 103001 | DOI
[61] Bogoliubov theory of acoustic Hawking radiation in Bose–Einstein condensates, Phys. Rev. A, Volume 80 (2009) no. 4, 043603 | DOI
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