Quantum density anomaly in optically trapped ultracold gases
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/223054 |
Resumo: | Water, the substance of life, is known for its myriad of anomalous properties, whose origins are still the subject of intense debates. In order to provide a different insight into this problem, we show how its density anomaly can be reproduced using a quantum simulator. In particular, we demonstrate that the Bose-Hubbard model, a paradigm system in quantum mechanics, exhibits an increase in density with temperature at fixed pressure in the regular fluid regime and in the superfluid phase. We propose that the mechanism underlying the anomalies is related to zero-point entropies and ground-state phase transitions. A connection with the typical experimental scales and setups including confinement effects is also addressed. In this scenario, such finding opens a pathway for theoretical and experimental studies of waterlike anomalies in the area of ultracold quantum gases. |
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Rizzatti, Eduardo OsórioBarbosa, Marco Aurélio AlvesBarbosa, Marcia Cristina Bernardes2021-06-30T04:24:42Z20201050-2947http://hdl.handle.net/10183/223054001126146Water, the substance of life, is known for its myriad of anomalous properties, whose origins are still the subject of intense debates. In order to provide a different insight into this problem, we show how its density anomaly can be reproduced using a quantum simulator. In particular, we demonstrate that the Bose-Hubbard model, a paradigm system in quantum mechanics, exhibits an increase in density with temperature at fixed pressure in the regular fluid regime and in the superfluid phase. We propose that the mechanism underlying the anomalies is related to zero-point entropies and ground-state phase transitions. A connection with the typical experimental scales and setups including confinement effects is also addressed. In this scenario, such finding opens a pathway for theoretical and experimental studies of waterlike anomalies in the area of ultracold quantum gases.application/pdfengPhysical review. A, Atomic, molecular, and optical physics. New York. Vol. 102, no. 3 (Sep. 2020), 033331, 13 p.Condensação Bose-EinsteinModelo de hubbardPontos criticosSuperfluidezQuantum density anomaly in optically trapped ultracold gasesEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001126146.pdf.txt001126146.pdf.txtExtracted Texttext/plain52062http://www.lume.ufrgs.br/bitstream/10183/223054/2/001126146.pdf.txtb47bda38e240ab15772b863eeb4da041MD52ORIGINAL001126146.pdfTexto completo (inglês)application/pdf1797352http://www.lume.ufrgs.br/bitstream/10183/223054/1/001126146.pdffb6fa46b6e3d8c2add96e9d9b23d17d5MD5110183/2230542024-02-07 06:01:42.064208oai:www.lume.ufrgs.br:10183/223054Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-02-07T08:01:42Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Quantum density anomaly in optically trapped ultracold gases |
title |
Quantum density anomaly in optically trapped ultracold gases |
spellingShingle |
Quantum density anomaly in optically trapped ultracold gases Rizzatti, Eduardo Osório Condensação Bose-Einstein Modelo de hubbard Pontos criticos Superfluidez |
title_short |
Quantum density anomaly in optically trapped ultracold gases |
title_full |
Quantum density anomaly in optically trapped ultracold gases |
title_fullStr |
Quantum density anomaly in optically trapped ultracold gases |
title_full_unstemmed |
Quantum density anomaly in optically trapped ultracold gases |
title_sort |
Quantum density anomaly in optically trapped ultracold gases |
author |
Rizzatti, Eduardo Osório |
author_facet |
Rizzatti, Eduardo Osório Barbosa, Marco Aurélio Alves Barbosa, Marcia Cristina Bernardes |
author_role |
author |
author2 |
Barbosa, Marco Aurélio Alves Barbosa, Marcia Cristina Bernardes |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Rizzatti, Eduardo Osório Barbosa, Marco Aurélio Alves Barbosa, Marcia Cristina Bernardes |
dc.subject.por.fl_str_mv |
Condensação Bose-Einstein Modelo de hubbard Pontos criticos Superfluidez |
topic |
Condensação Bose-Einstein Modelo de hubbard Pontos criticos Superfluidez |
description |
Water, the substance of life, is known for its myriad of anomalous properties, whose origins are still the subject of intense debates. In order to provide a different insight into this problem, we show how its density anomaly can be reproduced using a quantum simulator. In particular, we demonstrate that the Bose-Hubbard model, a paradigm system in quantum mechanics, exhibits an increase in density with temperature at fixed pressure in the regular fluid regime and in the superfluid phase. We propose that the mechanism underlying the anomalies is related to zero-point entropies and ground-state phase transitions. A connection with the typical experimental scales and setups including confinement effects is also addressed. In this scenario, such finding opens a pathway for theoretical and experimental studies of waterlike anomalies in the area of ultracold quantum gases. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020 |
dc.date.accessioned.fl_str_mv |
2021-06-30T04:24:42Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/223054 |
dc.identifier.issn.pt_BR.fl_str_mv |
1050-2947 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001126146 |
identifier_str_mv |
1050-2947 001126146 |
url |
http://hdl.handle.net/10183/223054 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. A, Atomic, molecular, and optical physics. New York. Vol. 102, no. 3 (Sep. 2020), 033331, 13 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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