Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1038/s41598-018-27146-1 http://hdl.handle.net/11449/176436 |
Resumo: | The formation of a regular lattice of quantized vortices in a fluid under rotation is a smoking-gun signature of its superfluid nature. Here we study the vortex lattice in a dilute superfluid gas of bosonic atoms at zero temperature along the crossover from the weak-coupling regime, where the inter-atomic scattering length is very small compared to the average distance between atoms, to the unitarity regime, where the inter-atomic scattering length diverges. This study is based on high-performance numerical simulations of the time-dependent nonlinear Schrödinger equation for the superfluid order parameter in three spatial dimensions, using a realistic analytical expression for the bulk equation of state of the system along the crossover from weak-coupling to unitarity. This equation of state has the correct weak-coupling and unitarity limits and faithfully reproduces the results of an accurate multi-orbital microscopic calculation. Our numerical predictions of the number of vortices and root-mean-square sizes are important benchmarks for future experiments. |
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Vortex lattice in the crossover of a Bose gas from weak coupling to unitarityThe formation of a regular lattice of quantized vortices in a fluid under rotation is a smoking-gun signature of its superfluid nature. Here we study the vortex lattice in a dilute superfluid gas of bosonic atoms at zero temperature along the crossover from the weak-coupling regime, where the inter-atomic scattering length is very small compared to the average distance between atoms, to the unitarity regime, where the inter-atomic scattering length diverges. This study is based on high-performance numerical simulations of the time-dependent nonlinear Schrödinger equation for the superfluid order parameter in three spatial dimensions, using a realistic analytical expression for the bulk equation of state of the system along the crossover from weak-coupling to unitarity. This equation of state has the correct weak-coupling and unitarity limits and faithfully reproduces the results of an accurate multi-orbital microscopic calculation. Our numerical predictions of the number of vortices and root-mean-square sizes are important benchmarks for future experiments.Instituto de Física Teórica UNESP - Universidade Estadual Paulista, 01.140-070 São PauloDipartimento di Fisica e Astronomia Galileo Galilei Università di Padova, Via Marzolo 8Istituto Nazionale di Ottica (INO) Del Consiglio Nazionale Delle Ricerche (CNR), Via Nello Carrara 1Instituto de Física Teórica UNESP - Universidade Estadual Paulista, 01.140-070 São PauloUniversidade Estadual Paulista (Unesp)Università di PadovaIstituto Nazionale di Ottica (INO) Del Consiglio Nazionale Delle Ricerche (CNR)Adhikari, S. K. [UNESP]Salasnich, L.2018-12-11T17:20:48Z2018-12-11T17:20:48Z2018-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1038/s41598-018-27146-1Scientific Reports, v. 8, n. 1, 2018.2045-2322http://hdl.handle.net/11449/17643610.1038/s41598-018-27146-12-s2.0-850483823572-s2.0-85048382357.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengScientific Reports1,533info:eu-repo/semantics/openAccess2023-12-11T06:16:43Zoai:repositorio.unesp.br:11449/176436Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-11T06:16:43Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity |
title |
Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity |
spellingShingle |
Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity Adhikari, S. K. [UNESP] |
title_short |
Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity |
title_full |
Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity |
title_fullStr |
Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity |
title_full_unstemmed |
Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity |
title_sort |
Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity |
author |
Adhikari, S. K. [UNESP] |
author_facet |
Adhikari, S. K. [UNESP] Salasnich, L. |
author_role |
author |
author2 |
Salasnich, L. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Università di Padova Istituto Nazionale di Ottica (INO) Del Consiglio Nazionale Delle Ricerche (CNR) |
dc.contributor.author.fl_str_mv |
Adhikari, S. K. [UNESP] Salasnich, L. |
description |
The formation of a regular lattice of quantized vortices in a fluid under rotation is a smoking-gun signature of its superfluid nature. Here we study the vortex lattice in a dilute superfluid gas of bosonic atoms at zero temperature along the crossover from the weak-coupling regime, where the inter-atomic scattering length is very small compared to the average distance between atoms, to the unitarity regime, where the inter-atomic scattering length diverges. This study is based on high-performance numerical simulations of the time-dependent nonlinear Schrödinger equation for the superfluid order parameter in three spatial dimensions, using a realistic analytical expression for the bulk equation of state of the system along the crossover from weak-coupling to unitarity. This equation of state has the correct weak-coupling and unitarity limits and faithfully reproduces the results of an accurate multi-orbital microscopic calculation. Our numerical predictions of the number of vortices and root-mean-square sizes are important benchmarks for future experiments. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:20:48Z 2018-12-11T17:20:48Z 2018-12-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1038/s41598-018-27146-1 Scientific Reports, v. 8, n. 1, 2018. 2045-2322 http://hdl.handle.net/11449/176436 10.1038/s41598-018-27146-1 2-s2.0-85048382357 2-s2.0-85048382357.pdf |
url |
http://dx.doi.org/10.1038/s41598-018-27146-1 http://hdl.handle.net/11449/176436 |
identifier_str_mv |
Scientific Reports, v. 8, n. 1, 2018. 2045-2322 10.1038/s41598-018-27146-1 2-s2.0-85048382357 2-s2.0-85048382357.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Scientific Reports 1,533 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1799965249512669184 |