Wilson Ratio of Fermi Gases in One Dimension
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/101375 |
Resumo: | We calculate the Wilson ratio of the one-dimensional Fermi gas with spin imbalance. The Wilson ratio of attractively interacting fermions is solely determined by the density stiffness and sound velocity of pairs and of excess fermions for the two-component Tomonaga-Luttinger liquid phase. The ratio exhibits anomalous enhancement at the two critical points due to the sudden change in the density of states. Despite a breakdown of the quasiparticle description in one dimension, two important features of the Fermi liquid are retained; namely, the specific heat is linearly proportional to temperature, whereas the susceptibility is independent of temperature. In contrast to the phenomenological Tomonaga-Luttinger liquid parameter, the Wilson ratio provides a powerful parameter for testing universal quantum liquids of interacting fermions in one, two, and three dimensions. |
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Guan, Xi-WenYin, XiangguoFoerster, AngelaBatchelor, Murray T.Lee, ChaohongLin, Hai-Qing2014-08-19T02:10:38Z20130031-9007http://hdl.handle.net/10183/101375000904481We calculate the Wilson ratio of the one-dimensional Fermi gas with spin imbalance. The Wilson ratio of attractively interacting fermions is solely determined by the density stiffness and sound velocity of pairs and of excess fermions for the two-component Tomonaga-Luttinger liquid phase. The ratio exhibits anomalous enhancement at the two critical points due to the sudden change in the density of states. Despite a breakdown of the quasiparticle description in one dimension, two important features of the Fermi liquid are retained; namely, the specific heat is linearly proportional to temperature, whereas the susceptibility is independent of temperature. In contrast to the phenomenological Tomonaga-Luttinger liquid parameter, the Wilson ratio provides a powerful parameter for testing universal quantum liquids of interacting fermions in one, two, and three dimensions.application/pdfengPhysical review letters. Melville. Vol. 111, no. 13 (Sep. 2013), 130401, 5 p.Pontos criticosQuase-particulasOndas acústicasLíquido de FermiLíquido de LuttingerWilson Ratio of Fermi Gases in One DimensionEstrangeiroinfo: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:UFRGSORIGINAL000904481.pdf000904481.pdfTexto completo (inglês)application/pdf611223http://www.lume.ufrgs.br/bitstream/10183/101375/1/000904481.pdfa61eb5c8d2b678fa8beed8d0e905221dMD51TEXT000904481.pdf.txt000904481.pdf.txtExtracted Texttext/plain23944http://www.lume.ufrgs.br/bitstream/10183/101375/2/000904481.pdf.txtf468ff3f4e36a5b780feb7337615d361MD52THUMBNAIL000904481.pdf.jpg000904481.pdf.jpgGenerated Thumbnailimage/jpeg1967http://www.lume.ufrgs.br/bitstream/10183/101375/3/000904481.pdf.jpgebfe4dc47beec4c053abba16c6766f97MD5310183/1013752023-06-24 03:35:04.284332oai:www.lume.ufrgs.br:10183/101375Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-06-24T06:35:04Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Wilson Ratio of Fermi Gases in One Dimension |
title |
Wilson Ratio of Fermi Gases in One Dimension |
spellingShingle |
Wilson Ratio of Fermi Gases in One Dimension Guan, Xi-Wen Pontos criticos Quase-particulas Ondas acústicas Líquido de Fermi Líquido de Luttinger |
title_short |
Wilson Ratio of Fermi Gases in One Dimension |
title_full |
Wilson Ratio of Fermi Gases in One Dimension |
title_fullStr |
Wilson Ratio of Fermi Gases in One Dimension |
title_full_unstemmed |
Wilson Ratio of Fermi Gases in One Dimension |
title_sort |
Wilson Ratio of Fermi Gases in One Dimension |
author |
Guan, Xi-Wen |
author_facet |
Guan, Xi-Wen Yin, Xiangguo Foerster, Angela Batchelor, Murray T. Lee, Chaohong Lin, Hai-Qing |
author_role |
author |
author2 |
Yin, Xiangguo Foerster, Angela Batchelor, Murray T. Lee, Chaohong Lin, Hai-Qing |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Guan, Xi-Wen Yin, Xiangguo Foerster, Angela Batchelor, Murray T. Lee, Chaohong Lin, Hai-Qing |
dc.subject.por.fl_str_mv |
Pontos criticos Quase-particulas Ondas acústicas Líquido de Fermi Líquido de Luttinger |
topic |
Pontos criticos Quase-particulas Ondas acústicas Líquido de Fermi Líquido de Luttinger |
description |
We calculate the Wilson ratio of the one-dimensional Fermi gas with spin imbalance. The Wilson ratio of attractively interacting fermions is solely determined by the density stiffness and sound velocity of pairs and of excess fermions for the two-component Tomonaga-Luttinger liquid phase. The ratio exhibits anomalous enhancement at the two critical points due to the sudden change in the density of states. Despite a breakdown of the quasiparticle description in one dimension, two important features of the Fermi liquid are retained; namely, the specific heat is linearly proportional to temperature, whereas the susceptibility is independent of temperature. In contrast to the phenomenological Tomonaga-Luttinger liquid parameter, the Wilson ratio provides a powerful parameter for testing universal quantum liquids of interacting fermions in one, two, and three dimensions. |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013 |
dc.date.accessioned.fl_str_mv |
2014-08-19T02:10:38Z |
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/10183/101375 |
dc.identifier.issn.pt_BR.fl_str_mv |
0031-9007 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000904481 |
identifier_str_mv |
0031-9007 000904481 |
url |
http://hdl.handle.net/10183/101375 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review letters. Melville. Vol. 111, no. 13 (Sep. 2013), 130401, 5 p. |
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info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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