Quebra da simetria de Lorentz e o termo de Chern-Simons em (3+1) dimensões

Santos, Liner de Souza

doi:10.11606/d.43.2009.tde-03052010-110506

Cited by 1 publication

(1 citation statement)

References 8 publications

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“…The procedure for obtaining such action had as its starting point the expansion of the modified fermion propagator given by the new theory. This result is in agreement with those obtained in the literature, which may be distinct in regards to a constant if different methods of regularization are used (see, e.g., [22][23][24][25][26][27]). In the present calculation, using the method of dimensional regularization, it is noted that the induced action of the different terms cancel one another, and the limit m → 0 is not necessary and the induced action is finite.…”

Section: Discussionsupporting

confidence: 92%

Induced Chern-Simons Like Action by Lorentz Symmetry Breaking in (3+1)D QED

Oliveira¹

2010

Preprint

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In this paper, the induced Chern-Simons like action for a system of fermions interacting with a gauge field in (3 +1) dimensions is calculated in the presence of a background field that breaks the Lorentz and CPT symmetries. The main result of this work corresponds to the obtation of a usual Chern-Simons-type action in four-dimensional spacetime resulting from the addition to the conventional QED Lagrangian of a term with a background field that breaks the Lorentz symmetry of the Lagrangian gauge theory. It is pointed out that the proportionality constant in that term depends heavily on the regularization method used in the computations. As the articles on this subject in the literature are very difficult to read, here calculations are performed clearly and objectively.

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Section: Discussionsupporting

confidence: 92%

Induced Chern-Simons Like Action by Lorentz Symmetry Breaking in (3+1)D QED

Oliveira¹

2010

Preprint

View full text Add to dashboard Cite

show abstract

Quebra da simetria de Lorentz e o termo de Chern-Simons em (3+1) dimensões

Cited by 1 publication

References 8 publications

Induced Chern-Simons Like Action by Lorentz Symmetry Breaking in (3+1)D QED

Induced Chern-Simons Like Action by Lorentz Symmetry Breaking in (3+1)D QED

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