[geordief (OP)]

I have heard that they could be a consequence of intense gravitational environments where the spacetime curvature "shears" in some way.

Are there any coherent ideas going the rounds as to what consequences might follow if this idea had any firm basis and was able to be verified in some way?

What might observers of the sky be on the look out for example?

Something enormous?. Something tiny ? In between?

[evan_au]

An Einstein-Rosen bridge is a serious mathematical model which allows for wormholes.
- But we don't know if they exist in the real universe.
- One possible appearance of a 1-way wormhole could appear as a black hole: Stuff goes in, and doesn't come out again (because it ends up somewhere else).
See: https://en.wikipedia.org/wiki/Wormhole#Einstein%E2%80%93Rosen_bridges

[geordief (OP)]

An Einstein-Rosen bridge is a serious mathematical model which allows for wormholes.
- But we don't know if they exist in the real universe.
- One possible appearance of a 1-way wormhole could appear as a black hole: Stuff goes in, and doesn't come out again (because it ends up somewhere else).
See: https://en.wikipedia.org/wiki/Wormhole#Einstein%E2%80%93Rosen_bridges

Thanks.
I looked at thst page.It seems interesting but I have to admit it was very hard going for me.

But can I also ask whether wormholes  are only found in  models of General Relativity or are there any Quantum models that address the subject at all?

[Colin2B]

But can I also ask whether wormholes  are only found in  models of General Relativity or are there any Quantum models that address the subject at all?

That’s probably like asking if there is a quantum model of a solar system or a galaxy. Quantum deals with effects at extremely small dimensions and when scaled up many of the effects ‘average out’* and are not noticeable. However, there are quantum effects in the areas surrounding black holes and would also be around wormholes if they exist. Interestingly, relativity is relevant at the quantum level.

*not a proper description, but you get the idea.

[geordief (OP)]

However, there are quantum effects in the areas surrounding black holes and would also be around wormholes if they exist. Interestingly, relativity is relevant at the quantum level.

Any particular example of how a quantum effect might have a bearing on how a wormhole would be expected  to behave (or be observed) if it did turn out that they existed in Nature?

Are there any behaviours that could be ruled out owing to the constraints of QM?

I remember how Black Holes were considered outlandish in the past.

Is there any chance that Wormholes too might be  detected in the future?