Phase slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates

We study the relation between Josephson dynamics and topological excitations in a dilute Bose-Einstein condensate confined in a double-well trap. We show that the phase slips responsible for the self-trapping regime are created by vortex rings entering and annihilating inside the weak-link region or...

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Publicado: 2015
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v109_n4_p_Abad
http://hdl.handle.net/20.500.12110/paper_02955075_v109_n4_p_Abad
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02955075_v109_n4_p_Abad
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spelling paper:paper_02955075_v109_n4_p_Abad2023-06-08T15:27:06Z Phase slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates We study the relation between Josephson dynamics and topological excitations in a dilute Bose-Einstein condensate confined in a double-well trap. We show that the phase slips responsible for the self-trapping regime are created by vortex rings entering and annihilating inside the weak-link region or created at the center of the barrier and expanding outside the system. Large amplitude oscillations just before the onset of self-trapping are also strictly connected with the dynamics of vortex rings at the edges of the inter-well barrier. Our results extend and analyze the dynamics of the vortex-induced phase slippages suggested a few decades ago in relation to the "ac" Josephson effect of superconducting and superfluid helium systems. © CopyrightEPLA, 2015. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v109_n4_p_Abad http://hdl.handle.net/20.500.12110/paper_02955075_v109_n4_p_Abad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We study the relation between Josephson dynamics and topological excitations in a dilute Bose-Einstein condensate confined in a double-well trap. We show that the phase slips responsible for the self-trapping regime are created by vortex rings entering and annihilating inside the weak-link region or created at the center of the barrier and expanding outside the system. Large amplitude oscillations just before the onset of self-trapping are also strictly connected with the dynamics of vortex rings at the edges of the inter-well barrier. Our results extend and analyze the dynamics of the vortex-induced phase slippages suggested a few decades ago in relation to the "ac" Josephson effect of superconducting and superfluid helium systems. © CopyrightEPLA, 2015.
title Phase slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates
spellingShingle Phase slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates
title_short Phase slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates
title_full Phase slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates
title_fullStr Phase slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates
title_full_unstemmed Phase slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates
title_sort phase slips and vortex dynamics in josephson oscillations between bose-einstein condensates
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v109_n4_p_Abad
http://hdl.handle.net/20.500.12110/paper_02955075_v109_n4_p_Abad
_version_ 1768543608224350208

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