Modern Phys. Lett. A, 2014, Volume 29, Issue 17, Pages 1450090–7
Passing the Einstein–Rosen bridge
M. O. Katanaev
Steklov Mathematical Institute, ul. Gubkina, 8, Moscow 119991, Russia
A test particle moving along geodesic line in a spacetime has three physical propagating degrees of freedom and one unphysical gauge degree. We relax the requirement of geodesic completeness of a spacetime. Instead, we require test particles trajectories to be smooth and complete only for physical degrees of freedom. Test particles trajectories for Einstein–Rosen bridge are proved to be smooth and complete in the physical sector, and particles can freely penetrate the bridge in both directions.
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