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 E-Mail Wormholes play a key role in many science fiction films - often as a shortcut between two distant points in space. In physics, however, these tunnels in spacetime have remained purely hypothetical. An international team led by Dr. Jose Luis Blázquez-Salcedo of the University of Oldenburg has now presented a new theoretical model in the science journal Physical Review Letters that makes microscopic wormholes seem less far-fetched than in previous theories. Wormholes, like black holes, appear in the equations of Albert Einstein s general theory of relativity, published in 1916. An important postulate of Einstein s theory is that the universe has four dimensions - three spatial dimensions and time as the fourth dimension. Together they form what is known as spacetime, and spacetime can be stretched and curved by massive objects such as stars, much as a rubber sheet would be curved by a metal ball sinking into it. The curvature of spacetime determines the way objects like

Eugen raduAlbert einsteinJutta kunzChristian knollUniversity of bremenComplutense university of madridGerman research foundationResearch training group models of gravityUniversity of oldenburgCentre of applied space technologyPhysical review lettersComplutense universityUniversidade de aveiroResearch training groupApplied space technologyChemistry physics materials sciences