Dynamics of a vortex dipole in a holographic superfluid

Abstract We use holography to investigate the dynamics of a vortex-anti-vortex dipole in a strongly coupled superfluid in 2+1 dimensions. The system is evaluated in numerical real-time simulations in order to study the evolution of the vortices as they approach and eventually annihilate each other....

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Autores principales:	Carlo Ewerz, Andreas Samberg, Paul Wittmer
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	AdS-CFT Correspondence Gauge-gravity correspondence Holography and condensed matter physics (AdS/CMT) Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/02d1340bf024484a8a31240d630878ff
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spelling	oai:doaj.org-article:02d1340bf024484a8a31240d630878ff2021-12-05T12:25:11ZDynamics of a vortex dipole in a holographic superfluid10.1007/JHEP11(2021)1991029-8479https://doaj.org/article/02d1340bf024484a8a31240d630878ff2021-11-01T00:00:00Zhttps://doi.org/10.1007/JHEP11(2021)199https://doaj.org/toc/1029-8479Abstract We use holography to investigate the dynamics of a vortex-anti-vortex dipole in a strongly coupled superfluid in 2+1 dimensions. The system is evaluated in numerical real-time simulations in order to study the evolution of the vortices as they approach and eventually annihilate each other. A tracking algorithm with sub-plaquette resolution is introduced which permits a high-precision determination of the vortex trajectories. With the increased precision of the trajectories it becomes possible to directly compute the vortex velocities and accelerations. We find that in the holographic superfluid the vortices follow universal trajectories independent of their initial separation, indicating that a vortex-anti-vortex pair is fully characterized by its separation. Subtle non-universal effects in the vortex motion at early times of the evolution can be fully attributed to artifacts due to the numerical initialization of the vortices. We also study the dependence of the dynamics on the temperature of the superfluid.Carlo EwerzAndreas SambergPaul WittmerSpringerOpenarticleAdS-CFT CorrespondenceGauge-gravity correspondenceHolography and condensed matter physics (AdS/CMT)Nuclear and particle physics. Atomic energy. RadioactivityQC770-798ENJournal of High Energy Physics, Vol 2021, Iss 11, Pp 1-46 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	AdS-CFT Correspondence Gauge-gravity correspondence Holography and condensed matter physics (AdS/CMT) Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	AdS-CFT Correspondence Gauge-gravity correspondence Holography and condensed matter physics (AdS/CMT) Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Carlo Ewerz Andreas Samberg Paul Wittmer Dynamics of a vortex dipole in a holographic superfluid
description	Abstract We use holography to investigate the dynamics of a vortex-anti-vortex dipole in a strongly coupled superfluid in 2+1 dimensions. The system is evaluated in numerical real-time simulations in order to study the evolution of the vortices as they approach and eventually annihilate each other. A tracking algorithm with sub-plaquette resolution is introduced which permits a high-precision determination of the vortex trajectories. With the increased precision of the trajectories it becomes possible to directly compute the vortex velocities and accelerations. We find that in the holographic superfluid the vortices follow universal trajectories independent of their initial separation, indicating that a vortex-anti-vortex pair is fully characterized by its separation. Subtle non-universal effects in the vortex motion at early times of the evolution can be fully attributed to artifacts due to the numerical initialization of the vortices. We also study the dependence of the dynamics on the temperature of the superfluid.
format	article
author	Carlo Ewerz Andreas Samberg Paul Wittmer
author_facet	Carlo Ewerz Andreas Samberg Paul Wittmer
author_sort	Carlo Ewerz
title	Dynamics of a vortex dipole in a holographic superfluid
title_short	Dynamics of a vortex dipole in a holographic superfluid
title_full	Dynamics of a vortex dipole in a holographic superfluid
title_fullStr	Dynamics of a vortex dipole in a holographic superfluid
title_full_unstemmed	Dynamics of a vortex dipole in a holographic superfluid
title_sort	dynamics of a vortex dipole in a holographic superfluid
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/02d1340bf024484a8a31240d630878ff
work_keys_str_mv	AT carloewerz dynamicsofavortexdipoleinaholographicsuperfluid AT andreassamberg dynamicsofavortexdipoleinaholographicsuperfluid AT paulwittmer dynamicsofavortexdipoleinaholographicsuperfluid
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Dynamics of a vortex dipole in a holographic superfluid

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