Symplectic current for the field perturbations in dilaton-axion gravity coupled with Abelian fields

Details Symplectic current for the field perturbations in dilaton-axion gravity coupled with Abelian fields Symplectic current for the field perturbations in dilaton-axion gravity coupled with Abelian fields

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phrvd..57.3443c&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 57, Issue 6, 15 March 1998, pp.3443-3448

Physics

4

Einstein-Maxwell Spacetimes, Spacetimes With Fluids, Radiation Or Classical Fields, Exact Solutions

Scientific paper

Using the self-adjointness of the perturbation equations in the most general four-dimensional dilaton-axion gravity coupled with Abelian fields, a covariantly conserved current associated with the coupled field perturbations is obtained. By particular choices of the background quantities, the low-energy limit of the string theory is covered and the part of the current corresponding to the purely Einstein-Maxwell perturbations is fully consistent with that obtained previously by Burnett and Wald (by a different approach). The possible extensions of the present results are discussed.

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