Quantum coherence and uncertainty in the anisotropic XY chain
dc.contributor.author | Karpat, G. [UNESP] | |
dc.contributor.author | Çakmak, B. | |
dc.contributor.author | Fanchini, F. F. [UNESP] | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Faculty of Engineering and Natural Sciences, Sabanci University | |
dc.date.accessioned | 2018-12-11T16:37:51Z | |
dc.date.available | 2018-12-11T16:37:51Z | |
dc.date.issued | 2014-09-30 | |
dc.description.abstract | We explore the local quantum coherence and the local quantum uncertainty, based on Wigner-Yanase skew information, in the ground state of the anisotropic spin-1/2 XY chain in a transverse magnetic field. We show that the skew information, as a figure of merit, supplies the necessary information to reveal the occurrence of the second-order phase transition and the completely factorized ground state in the XY model. Additionally, in the same context, we also discuss the usefulness of a simple experimentally friendly lower bound of local quantum coherence. Furthermore, we demonstrate how the connection between the appearance of nonanalyticities in the local quantum uncertainty of the ground state and the quantum phase transitions does not hold in general, by providing explicit examples of the situation. Lastly, we discuss the ability of the local quantum coherence to accurately estimate the critical point of the phase transition, and we investigate the robustness of the factorization phenomenon at low temperatures. | en |
dc.description.affiliation | Faculdade de Ciências, UNESP-Universidade Estadual Paulista | |
dc.description.affiliation | Faculty of Engineering and Natural Sciences, Sabanci University | |
dc.description.affiliationUnesp | Faculdade de Ciências, UNESP-Universidade Estadual Paulista | |
dc.identifier | http://dx.doi.org/10.1103/PhysRevB.90.104431 | |
dc.identifier.citation | Physical Review B - Condensed Matter and Materials Physics, v. 90, n. 10, 2014. | |
dc.identifier.doi | 10.1103/PhysRevB.90.104431 | |
dc.identifier.file | 2-s2.0-84907452251.pdf | |
dc.identifier.issn | 1550-235X | |
dc.identifier.issn | 1098-0121 | |
dc.identifier.lattes | 8884890472193474 | |
dc.identifier.orcid | 0000-0003-3297-905X | |
dc.identifier.scopus | 2-s2.0-84907452251 | |
dc.identifier.uri | http://hdl.handle.net/11449/167667 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review B - Condensed Matter and Materials Physics | |
dc.relation.ispartofsjr | 1,604 | |
dc.rights.accessRights | Acesso aberto | |
dc.source | Scopus | |
dc.title | Quantum coherence and uncertainty in the anisotropic XY chain | en |
dc.type | Artigo | |
unesp.author.lattes | 8884890472193474[3] | |
unesp.author.orcid | 0000-0003-3297-905X[3] |
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