Detalhes bibliográficos
Ano de defesa: |
2018 |
Autor(a) principal: |
Carrijo, Thiago Mureebe
 |
Orientador(a): |
Avelar, Ardiley Torres
 |
Banca de defesa: |
Almeida, Agnaldo Rosa de,
Avelar, Ardiley Torres,
Valverde, Clodoaldo,
Oliveira, Guilherme Colherinhas de,
Cardoso, Wesley Bueno |
Tipo de documento: |
Tese
|
Tipo de acesso: |
Acesso aberto |
Idioma: |
por |
Instituição de defesa: |
Universidade Federal de Goiás
|
Programa de Pós-Graduação: |
Programa de Pós-graduação em Fisica (IF)
|
Departamento: |
Instituto de Física - IF (RG)
|
País: |
Brasil
|
Palavras-chave em Português: |
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Palavras-chave em Inglês: |
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Área do conhecimento CNPq: |
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Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tede/8562
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Resumo: |
In this work, we have studied how local quantum uncertainty (LQU) and linear entropy behave in critical systems. Two models of spin 1/2 systems were investigated: XY and XY with triple interaction (XYT), both unidimensional. It was concluded that these measures and their derivatives locate the phase transitions of these systems and a justification was given for the difference of behavior between the LQU and the linear entropy in the region near the transition in the XY model. A measure of multipartite quantum correlations was also created according to a set of axiomatic criteria, which was tested in the family of Werner-GHZ quantum states, producing results in accordance with the expected result, according to the literature. |