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Doctoral Thesis
DOI
https://doi.org/10.11606/T.43.2011.tde-25022012-164421
Document
Author
Full name
William Remo Pedroso Conti
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2011
Supervisor
Committee
Salinas, Silvio Roberto de Azevedo (President)
Barata, Joao Carlos Alves
Braga, Gastão de Almeida
Carneiro, Carlos Eugenio Imbassahy
Cordaro, Paulo Domingos
Title in Portuguese
Grupo de renormalização na aproximação de potencial local para o modelo O(N) de Heisenberg hierárquico: trajetória crítica e somabilidade da expansão 1/N
Keywords in Portuguese
aproximação de potencial local
equações a derivadas parciais
expansão 1/N
grupo de renormalização
somabilidade de séries formais
trajetória crítica
Abstract in Portuguese
Na aproximação de potencial local (L\downarrow1) a transformação de grupo de renormalização para o modelo O(N) de Heisenberg hierárquico é descrita por uma equação a derivadas parciais (EDP). Neste trabalho investigamos, na criticalidade (sistema à temperatura inversa crítica), a somabilidade da série de potências em 1/N que formalmente satisfaz essa EDP.
Title in English
Renormalization group in the local potential approximation for the hierarchical O(N) Heisenberg model: critical trajectory and summability of the 1/N expansion
Keywords in English
1/N expansion
critical trajectory
local potential approximation
partial differential equations
renormalization group
summability of formal series
Abstract in English
In the local potential approximation (L\downarrow1) the renormalization group transformation for the hierarchical O(N) Heisenberg model is described by a partial differential equation (PDE). In this work we investigate, at criticality (system at inverse critical temperature), the summability of the formal power series in 1/N which formally satisfies that PDE.
 
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tesewilliamremo.pdf (964.05 Kbytes)
Publishing Date
2012-05-21
 
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