Photon Propagation in Space-Time with a Compactified Spatial Dimension

Details Photon Propagation in Space-Time with a Compactified Spatial Dimension Photon Propagation in Space-Time with a Compactified Spatial Dimension

2001-07-22

arxiv.org/abs/hep-ph/0107229v1

Phys.Lett. B515 (2001) 341-347

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, to appear in PLB

Scientific paper

10.1016/S0370-2693(01)00883-8

The one-loop effects of vacuum polarization induced by untwisted fermions in QED in a nonsimply connected space-time with topology $S^{1}\times R^{3}$ are investigated. It is found that photon propagation in this system is anisotropic, appearing several massive photon modes and a superluminal transverse mode. For small compactification radius $a$, the superluminal velocity increases logarithmically with $a$. At low energies the photon masses lead to an effective confinement of the gauge fields into a (2+1)-dimensional manifold transverse to the compactified direction. The system shows a topologically induced directional superconductivity.

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