Wormholes

The Wormhole Drive uses a version of the Mach Effect which says that if a material's electrons could be shielded from the universal mass, then the large and negative “bare mass” of the electron would appear. This argument follows from the fact that electrons are surrounded by a sea of virtual particles and these virtual particles have a large positive mass. Since the electron's measured mass is very small, the electron's intrinsic mass must be large and negative.

This “exotic” mass-energy would display a repulsive gravity which along with the huge bare mass would be just the thing to open and keep open the mouth of a wormhole.

Once the near wormhole mouth is opened and stabilized the far wormhole mouth is cast. This is accomplished by feeding more exotic mass-energy into the near mouth and forcing a wormhole connection through the wormhole dimension to the far target. The far wormhole mouth opens in the target area and is kept open with the same exotic mass-energy as the near mouth. 

It soon became apparent that the key to stabilizing a wormhole, like a bridge, was in the supporting structure.

As the wormhole forms the negative mass-energy would spiral rapidly along the walls of the wormhole providing support. The usual attractive force of gravity is reversed between negative mass-energy and ordinary mass-energy and this repulsive force helps keep the wormhole from collapsing . . .

Source:

Sci-pedia - The Online Resource for Science - The Mach Effect and Wormhole Drives