Ambiguities in the effective action in Lorentz-violating gravity

M. Gomes, T. Mariz, J. R. Nascimento, E. Passos, A. Yu. Petrov, and A. J. da Silva
Phys. Rev. D 78, 025029 – Published 24 July 2008
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  • INTRODUCTION
  • GRAVITATIONAL CHERN-SIMONS ACTION
  • PERTURBATIVE INDUCTION OF THE…
  • SUMMARY
  • ACKNOWLEDGEMENTS
    • References

    Abstract

    We investigate the occurrence of ambiguities for the Lorentz-violating gravitational Chern-Simons term. It turns out that this term is accompanied by a coefficient depending on an undetermined parameter, due to an arbitrariness in the choice of the conserved current.

    • Received 2 June 2008

    DOI:https://doi.org/10.1103/PhysRevD.78.025029

    ©2008 American Physical Society

    Authors & Affiliations

    M. Gomes1,*, T. Mariz2,‡, J. R. Nascimento2,§, E. Passos2, A. Yu. Petrov2, and A. J. da Silva1,†

    • 1Instituto de Física, Universidade de São Paulo, Caixa Postal 66318, 05315-970, São Paulo, SP, Brazil
    • 2Departamento de Física, Universidade Federal da Paraíba, Caixa Postal 5008, 58051-970, João Pessoa, Paraíba, Brazil

    • *mgomes@fma.if.usp.br
    • †ajsilva@fma.if.usp.br
    • ‡tmariz@fma.if.usp.br
    • §jroberto@fma.if.usp.br

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    Vol. 78, Iss. 2 — 15 July 2008

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