Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings

Detalhes bibliográficos
Autor(a) principal: Pikovsky, Arkady
Data de Publicação: 2014
Outros Autores: Gupta, Shamik, Teles, Tarcisio Nunes, Benetti, Fernanda Pereira da Cruz, Pakter, Renato, Levin, Yan, Ruffo, Stefano
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/114533
Resumo: We explore ensemble inequivalence in long-range interacting systems by studying an XY model of classical spinswith ferromagnetic and nematic coupling.We demonstrate the inequivalence bymapping themicrocanonical phase diagram onto the canonical one, and also by doing the inverse mapping. We show that the equilibrium phase diagrams within the two ensembles strongly disagree within the regions of first-order transitions, exhibiting interesting features like temperature jumps. In particular, we discuss the coexistence and forbidden regions of different macroscopic states in both the phase diagrams.
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spelling Pikovsky, ArkadyGupta, ShamikTeles, Tarcisio NunesBenetti, Fernanda Pereira da CruzPakter, RenatoLevin, YanRuffo, Stefano2015-03-26T01:58:33Z20141539-3755http://hdl.handle.net/10183/114533000955546We explore ensemble inequivalence in long-range interacting systems by studying an XY model of classical spinswith ferromagnetic and nematic coupling.We demonstrate the inequivalence bymapping themicrocanonical phase diagram onto the canonical one, and also by doing the inverse mapping. We show that the equilibrium phase diagrams within the two ensembles strongly disagree within the regions of first-order transitions, exhibiting interesting features like temperature jumps. In particular, we discuss the coexistence and forbidden regions of different macroscopic states in both the phase diagrams.application/pdfengPhysical review. E, Statistical, nonlinear, and soft matter physics. Vol. 90, no. 6 (Dec. 2014), 062141, 5 p.FerromagnetismoDiagramas de faseEnsemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplingsEstrangeiroinfo: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:UFRGSORIGINAL000955546.pdf000955546.pdfTexto completo (inglês)application/pdf531482http://www.lume.ufrgs.br/bitstream/10183/114533/1/000955546.pdf7ea6b9e4fa01ac4cfc463f2e3423316bMD51TEXT000955546.pdf.txt000955546.pdf.txtExtracted Texttext/plain22939http://www.lume.ufrgs.br/bitstream/10183/114533/2/000955546.pdf.txtf57c726412dbefd211829db18fed719dMD52THUMBNAIL000955546.pdf.jpg000955546.pdf.jpgGenerated Thumbnailimage/jpeg2145http://www.lume.ufrgs.br/bitstream/10183/114533/3/000955546.pdf.jpg5e3fd2fc69075bb87bf36a0894d3f576MD5310183/1145332023-09-02 03:32:50.180099oai:www.lume.ufrgs.br:10183/114533Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2023-09-02T06:32:50Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings
title Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings
spellingShingle Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings
Pikovsky, Arkady
Ferromagnetismo
Diagramas de fase
title_short Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings
title_full Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings
title_fullStr Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings
title_full_unstemmed Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings
title_sort Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings
author Pikovsky, Arkady
author_facet Pikovsky, Arkady
Gupta, Shamik
Teles, Tarcisio Nunes
Benetti, Fernanda Pereira da Cruz
Pakter, Renato
Levin, Yan
Ruffo, Stefano
author_role author
author2 Gupta, Shamik
Teles, Tarcisio Nunes
Benetti, Fernanda Pereira da Cruz
Pakter, Renato
Levin, Yan
Ruffo, Stefano
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Pikovsky, Arkady
Gupta, Shamik
Teles, Tarcisio Nunes
Benetti, Fernanda Pereira da Cruz
Pakter, Renato
Levin, Yan
Ruffo, Stefano
dc.subject.por.fl_str_mv Ferromagnetismo
Diagramas de fase
topic Ferromagnetismo
Diagramas de fase
description We explore ensemble inequivalence in long-range interacting systems by studying an XY model of classical spinswith ferromagnetic and nematic coupling.We demonstrate the inequivalence bymapping themicrocanonical phase diagram onto the canonical one, and also by doing the inverse mapping. We show that the equilibrium phase diagrams within the two ensembles strongly disagree within the regions of first-order transitions, exhibiting interesting features like temperature jumps. In particular, we discuss the coexistence and forbidden regions of different macroscopic states in both the phase diagrams.
publishDate 2014
dc.date.issued.fl_str_mv 2014
dc.date.accessioned.fl_str_mv 2015-03-26T01:58:33Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/114533
dc.identifier.issn.pt_BR.fl_str_mv 1539-3755
dc.identifier.nrb.pt_BR.fl_str_mv 000955546
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. E, Statistical, nonlinear, and soft matter physics. Vol. 90, no. 6 (Dec. 2014), 062141, 5 p.
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