Einstein-Maxwell Fields in Space-Times with Defects

Details Einstein-Maxwell Fields in Space-Times with Defects Einstein-Maxwell Fields in Space-Times with Defects

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..ses.jb005b&link_type=abstract

American Physical Society, The 70th Annual Meeting of the Southeastern Section, November 6-8, 2003, Wilmington, North Carolina,

Physics

Scientific paper

Defects in space-time are of interest in understanding the early universe. Our focus has been on the effects of possible defects on charge conservation and their implication for the formulation of Maxwell?s equations. We have found that charge conservation is preserved for specific types of defects. When they are included the Maxwell equations must be modified and become duality invariant with respect to rotations between the electric and magnetic fields. If an Einstein?Maxwell system is then considered it is necessary that we include a scalar field that couples with the Maxwell field. This leads to an action that is similar to that of the Einstein-Maxwell-dilaton fields which arise as the low energy effective action from superstring theory. The implication of the resulting field equations are considered in terms of experiments that could be performed to test for the presence of defects.

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