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Master's Dissertation
DOI
https://doi.org/10.11606/D.43.2002.tde-02062021-180223
Document
Author
Full name
Fernando Teixeira da Silva Filho
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2002
Supervisor
Committee
Silva, Adilson Jose da (President)
Brandt, Fernando Tadeu Caldeira
Natale, Adriano Antonio
Title in Portuguese
Correções radiativas na teoria de Chern-Simons calculadas em um gauge interpolante
Keywords in Portuguese
TEORIA DE CAMPOS
Abstract in Portuguese
Nesta dissertação nós investigamos o modelo de um campo germiônico interagindo com o campo de gauge de Chern-Simons, utilizando um termo de fixação de gauge não covariante dado por ''Lagrangian' IND.FG' = 1/2 'lâmbda''('alfa'' IND.0''A POT.0' - 'delta'. 'A') POT.2'. A variação contínua do parâmetro interpolante 'alfa' entre 0 e 1 reproduz nestes limites o gauge não covariante de Coulomb e o gauge covariante de Lorentz. Calculamos as correções radiativas na aproximação de um loop e determinamos o valor do momento magnético anômalo
Title in English
Radiative corrections in Chern-Simons theory calculated on an interpolating gauge
Keywords in English
FIELD THEORY
Abstract in English
In this dissertation we investigate the model of a fermionic field interacting with a gaude Chern-SImons field, with a noncovariant gauge fixing term of the form ''Lagrangian' IND.FG' = 1/2 'lambda''('alpha'' IND.0''A POT.0' - 'delta'. 'A') POT.2', where 'alpha' is a free parameter. The continuous wariation of 'alpha' between 0 and 1 bring us from the noncovariant gauge of Coulomb to the covariant Lorentz one. Radiative corrections to the magnetic moment of the fermion is calculated in one loop and sown that different Feynman graphs contribute to the physical result in the Coulomb or the Lorentz gauge.
 
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2002SilvaFilho.pdf (41.05 Mbytes)
Publishing Date
2021-06-03
 
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