A theoretical basis for the existence of wormholes, which are tubes that link two distinct locations in space-time, has been created by physicists at the University of Cambridge. In the case that a piece of data or a tangible item could traverse the wormhole, time travel and immediate communication over vast distances may become feasible.
"But there's a problem: Einstein's wormholes are extremely unsteady, and they don't stay open long enough for something to pass over."
Scientists came to the conclusion that Casimir energy, a sort of negative energy, may keep wormholes open in 1988.
The theoretical answer developed at Cambridge has to do with quantum energy's characteristics, which show that even vacuums are teeming with energy waves.
“Does this mean we have the technology for building a wormhole?” asks Matt Visser at the Victoria University of Wellington in New Zealand. “The answer is still no.” Still, he is intrigued by Butcher’s work. “From a physics perspective, it may revitalise interest in wormholes.”
If you picture two metal plates in a vacuum, certain waves of energy would be disproportionately large and be able to fit between the plates, creating a negative energy field in the space-time between the plates.
"Under the right circumstances, could the tube-like shape of the wormhole itself generate Casimir energy? Calculations show that if the wormhole's throat is orders of magnitude longer then the width of its mouth, it does indeed create Casimir energy at its center."