The wormholes tag has no wiki summary.
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Wormholes & Time Machines - for *experts* in GR/maths
EDIT: Further clarification in the context of answers/comments received to 20 Jan has been appended
EDIT: 21 Jan - Response to the Lubos Expansion appended [in progress, not yet complete]
EDIT: 23 ...
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1answer
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Do spacelike junctions in the Thin-Shell Formalism imply energy nonconservation and counterintuitive wormholes?
The Thin Shell Formalism (MTW 1973 p.551ff) is used to properly paste together different vacuum solutions to the Einstein equations. At the junction of the two solutions is a hypersurface of matter – ...
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1answer
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Tachyonic antitelephone vs messaging through a wormhole
From the wikipedia article on tachyons:
Most physicists think that faster-than-light particles cannot exist because they are not consistent with the known laws of physics.[3][5] If such particles ...
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2answers
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Is it mathematically possible for a black hole to be connected to a white hole or a worm hole?
I know that there's no evidence at this point for "white holes" however would it even be mathematically possible for a black hole to be connected to a white hole (total opposite so everything would be ...
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1answer
201 views
Why can't Schwarzschild wormholes exist?
So, I've recently been reading up on Schwarzschild wormholes and I've learned that they cannot exist becuase they violate the 2nd Law of Thermodynamics.
What I'm asking is: Why do they violate the ...
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2answers
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Are we going to be able to travel trough space deforming the space-time?
I'm not talking about the speed of the spaceship. If we can deform space-time we needn't any type of propulsion. And how can the travel affect to it's pilots? Can they survive?
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1answer
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Math and Wormholes
Hopefully this is the correct forum for this. I felt that Physics Overflow may not be the correct place. I had a student approach me ask me what kinds of mathematics goes into the study of wormholes. ...
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2answers
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A simple thought experiment about traversable wormholes
Let's say I have a tube, of large radius (about 5 - 7 meters in diameter), with traversable wormholes at the ends. The wormholes are arranged as such that if something falls inside one hole from ...
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5answers
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Can you use a wormhole to travel through space not time?
I want to know if you could theoretically travel from your house to work via a wormhole but stay in the present day...without changing time. Kind of like teleportation but harnessing the energy of a ...
3
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1answer
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non-exotic traversable wormholes and string theory
In this article it is claimed that certain type of string theory called EGBd allows for traversable wormhole solutions that do not require exotic matter.
What is this EGBd model and how it fits in ...
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0answers
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Going through a ring of black holes
Mathematician here with a speculative physical question -- feel free to boot me if the level isn't right.
Suppose one finds, or builds, a constellation of several black holes arranged in a circle. ...
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4answers
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How long would it take to travel through a wormhole?
Assuming wormholes exist and you put some matter into one, how long would it take to reach the other end versus how far apart the two ends are? Basically, by how much does a wormhole stretch ...
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1answer
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Diving into a charged (Reissner-Nordstrom) Black hole
Apparently there are two event horizons in this type of black hole, where the second one is known as the Cauchy horizon. According to Carroll, if you go into the first one, you will fall until you ...
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1answer
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what does holographic principle from string theory say about the possibilities of wormhole travel?
Is travel through stable macroscopic wormholes between remote points of spacetime going to be possible in a definitive theory of gravity, be it string theory or something beyond it?
Physicists level ...
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1answer
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Designing a plausible faster than light drive: the Space Skip Drive [duplicate]
Possible Duplicate:
Is the Portal feasible in real life?
I'm designing a plausible faster-than-light (FTL) drive for a SF universe. Here's what I have so far. I'm aware of existing ...
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Wormholes and the illusion of time?
I was watching a video on Youtube by Brian Greene, "the illusion of time."http://www.youtube.com/watch?v=j-u1aaltiq4
In that video, he introduces to me the idea of a "brane," or a slice of the ...
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1answer
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Is it possible that a black hole sucks energy that is the origin of another universes big bang?
The universe expanded from nothing, right? And black holes may be a "gate" to parallel universes, is it possible that stars that is being sucked in by black holes in our universe may be the origin of ...
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1answer
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Is it possible to mould _ruptures_ in Space-time?
In one of the documentaries hosted by Morgan Freeman, a reference was made that just like an ordinary three-dimensional object like a ruler has scratches and cracks, in the same way there might be ...
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Do wormhole exits require matter? If not, would they change the edge of the universe?
As a layperson who watches way too many theoretical physics and astronomy documentaries, I've seen the folded-piece-of-paper analogy of wormholes a bajillion times. Usually they explain that black ...
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1answer
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Wormhole related experiments? [closed]
Are there any simple "experiments" that can be done in a high school science lab that could demonstrate some sort of basic principals of wormholes or spacetime? Or sort of proving how long something ...
