Solutions

Introduction
History
Definition
Problems
Solutions
Time Travel
Conclusion
Bibliography

In order to cancel out the waves of gravity created by the passage of an object through the wormhole, a large quantity of anti-gravity must be created. The most likely way to create this amount of anti-gravity is what is called the Casimir effect. When two metal plates are placed extremely close together in a vacuum, the photons between the particles are restricted in the wavelengths that they can travel in. Because the photons outside the plates are not restricted in their wavelengths, more of them are bouncing off on the outside than between the plates. Therefore, a very small attractive force is exerted on the plates, and this is known as the Casimir effect. If this force could be harnessed and expanded, it could be used to increase the size of the wormhole as well as negating the gravity waves of the object going through it.

From http://www.sa.infn.it/GravitationAstrophysics/Casimir/Introduction.html