Any reasonable theory of quantum gravity will allow closed universes to branch off from our nearly flat region of spacetime. I describe the possible quantum states of these closed universes. They correspond to wormholes which connect two asymptotically Euclidean regions, or two parts of the same asymptotically Euclidean region. I calculate the influence of these wormholes on ordinary quantum fields at low energies in the asymptotic region. This can be represented by adding effective interactions in flat spacetime which create or annihilate closed universes containing certain numbers of particles. The effective interactions are small except for closed universes containing scalar particles in the spatially homogeneous mode. If these scalar interactions are not reduced by sypersymmetry, it may be that any scalar particles we observe would have to be bound states of particles of higher spin, such as the pion. An observer in the asymptotically flat region would not be able to measure the quantum state of closed universes that branched off. He would therefore have to sum over all possibilities for the closed universes. This would mean that the final state would appear to be a mixed quantum state, rather than a pure quantum state.
From what I understand, nobody has yet produced a viable model for a wormhole that can actually allow matter to pass through it. The problem is that the wormhole works as long as you use only "test particles" that have no mass and do not disturb the gravitational potential. But once you actually start using real objects with mass, even a very small mass, that small mass is big enough to collapse the worm hole.2rashmi1993 said:do wormholes actually exists?
if yes, then, is it true that they act as shortcuts for some other destinations in the universe?
and lastly can man himself create them!?.....all a mystery 4 me!
2rashmi1993 said:do wormholes actually exists?
2rashmi1993 said:if yes, then, is it true that they act as shortcuts for some other destinations in the universe?
Pcrouse said:Do you think it's possible that wormholes connect universes? I always thought that maybe that's what they did. But I dunno.
2rashmi1993 said:and lastly can man himself create them!?.....all a mystery 4 me!
A wormhole is a hypothetical tunnel or shortcut in space-time that connects two distant points in the universe.
Wormholes are currently a theoretical concept in physics, but there is ongoing research and debate about their existence and potential properties.
While both wormholes and black holes involve extreme bending of space-time, wormholes are theorized to have two distinct openings whereas black holes have only one.
Some theories suggest that wormholes could potentially allow for time travel, but there is currently no evidence or practical means of achieving this.
As of now, there is no confirmed observational evidence of wormholes in the universe. However, some phenomena in space, such as quasars and gamma-ray bursts, have been theorized to be potential indicators of wormholes.