Instability of holographic superfluids in optical lattice

Abstract The instability of superfluids in optical lattice has been investigated using the holographic model. The static and steady flow solutions are numerically obtained from the static equations of motion and the solutions are described as Bloch waves with different Bloch wave vector k. Based on...

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Autores principales:	Peng Yang, Xin Li, Yu Tian
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Holography and condensed matter physics (AdS/CMT) AdS-CFT Correspondence Gauge-gravity correspondence Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/17d355dd11a648eda2b1dfdca44ff102
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spelling	oai:doaj.org-article:17d355dd11a648eda2b1dfdca44ff1022021-11-28T12:40:30ZInstability of holographic superfluids in optical lattice10.1007/JHEP11(2021)1901029-8479https://doaj.org/article/17d355dd11a648eda2b1dfdca44ff1022021-11-01T00:00:00Zhttps://doi.org/10.1007/JHEP11(2021)190https://doaj.org/toc/1029-8479Abstract The instability of superfluids in optical lattice has been investigated using the holographic model. The static and steady flow solutions are numerically obtained from the static equations of motion and the solutions are described as Bloch waves with different Bloch wave vector k. Based on these Bloch waves, the instability is investigated at two levels. At the linear perturbation level, we show that there is a critical k c above which the superflow is unstable. At the fully nonlinear level, the intermediate state and final state of unstable superflow are identified through numerical simulation of the full equations of motion. The results show that during the time evolution, the unstable superflow will undergo a chaotic state with soliton generation. The system will settle down to a stable state with k < k c eventually, with a smaller current and a larger condensate.Peng YangXin LiYu TianSpringerOpenarticleHolography and condensed matter physics (AdS/CMT)AdS-CFT CorrespondenceGauge-gravity correspondenceNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENJournal of High Energy Physics, Vol 2021, Iss 11, Pp 1-20 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Holography and condensed matter physics (AdS/CMT) AdS-CFT Correspondence Gauge-gravity correspondence Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Holography and condensed matter physics (AdS/CMT) AdS-CFT Correspondence Gauge-gravity correspondence Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Peng Yang Xin Li Yu Tian Instability of holographic superfluids in optical lattice
description	Abstract The instability of superfluids in optical lattice has been investigated using the holographic model. The static and steady flow solutions are numerically obtained from the static equations of motion and the solutions are described as Bloch waves with different Bloch wave vector k. Based on these Bloch waves, the instability is investigated at two levels. At the linear perturbation level, we show that there is a critical k c above which the superflow is unstable. At the fully nonlinear level, the intermediate state and final state of unstable superflow are identified through numerical simulation of the full equations of motion. The results show that during the time evolution, the unstable superflow will undergo a chaotic state with soliton generation. The system will settle down to a stable state with k < k c eventually, with a smaller current and a larger condensate.
format	article
author	Peng Yang Xin Li Yu Tian
author_facet	Peng Yang Xin Li Yu Tian
author_sort	Peng Yang
title	Instability of holographic superfluids in optical lattice
title_short	Instability of holographic superfluids in optical lattice
title_full	Instability of holographic superfluids in optical lattice
title_fullStr	Instability of holographic superfluids in optical lattice
title_full_unstemmed	Instability of holographic superfluids in optical lattice
title_sort	instability of holographic superfluids in optical lattice
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/17d355dd11a648eda2b1dfdca44ff102
work_keys_str_mv	AT pengyang instabilityofholographicsuperfluidsinopticallattice AT xinli instabilityofholographicsuperfluidsinopticallattice AT yutian instabilityofholographicsuperfluidsinopticallattice
_version_	1718407817876996096

Instability of holographic superfluids in optical lattice

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