Induced current and redefinition of electric and magnetic fields from noncompact KaluzaKlein theory: An experimental signature of the fifth dimension [rapid communication]
Abstract
The field equations for gravitation and electromagnetism with sources in four dimensions can be interpreted as arising from the vacuum Einstein equations in five dimensions. Gauge invariance of the electromagnetic potentials leads to a “generalized” electromagnetic field tensor. We use the action principle to derive the equations of motion for free electromagnetic fields in flat spacetime, and isolate an effective electromagnetic current with a source that is purely higherdimensional in origin. This current provides, at least in principle, a means of detecting extra dimensions experimentally.
 Publication:

Physics Letters B
 Pub Date:
 June 2005
 DOI:
 10.1016/j.physletb.2005.05.023
 arXiv:
 arXiv:hepth/0505049
 Bibcode:
 2005PhLB..617..193L
 Keywords:

 04.50.+h;
 11.10.Ef;
 03.50.De;
 Gravity in more than four dimensions KaluzaKlein theory unified field theories;
 alternative theories of gravity;
 Lagrangian and Hamiltonian approach;
 Classical electromagnetism Maxwell equations;
 High Energy Physics  Theory
 EPrint:
 6 pages