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Toastus
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Could the Bulk possibly be used as a hyperdrive?
BenTheMan said:You'd have to understand gravity a whole hell of a lot better than we currently understand it...
Also, in models with a bulk, the matter is sometimes localized to a brane, so it might be utterly impossible.
FTL_Diesel said:I think that it would depend on the topology of our brane as well, but higher-dimensional topology is not something I know.
Still, if you look at the evidence for the visible universe being flat, and thinking about the analogy of a flat 2D brane in a 3D bulk; it seems to me that travel through the bulk would add distance onto your path.
robousy said:You are forgetting my warp drive. ;)
http://arxiv.org/PS_cache/gr-qc/pdf/0512/0512152v1.pdf
The bulk plays a role.
I would think that there would be some way to get yourself off of a brane without ripping your strings off and closing them. If there was a hole in a brane, would you be able to go over it and float off, or would it be like a barrier, so you couldn't go in it?
You are forgetting my warp drive. ;)
http://arxiv.org/PS_cache/gr-qc/pdf/0512/0512152v1.pdf
The bulk plays a role.
If only quarks are able to go through the bulk, would it carry you with it, or would you be left on our brane?BenTheMan said:In many cases, matter JUST DOESN'T propogate in the bulk---there's no way around it.
Take a five dimensional orbifold GUT, for example---there are some fields which are stuck to the brane in the sense that they have no wavefunction in the fifth dimension. If the fields are stuck to the brane, there is absolutely no description of them off of the brane.
In some string models, matter is localized on a brane. In Type II strings, for example, open strings (by definition) end on a brane. So, again, there is no way to really describe an open string that DOESN'T end on a brane. As far as I know, the branes are space-filling and cannot have holes in them.
This said, there may be ways to do it. For example, in some orbifold GUT's, one can put one generation of SM quarks and leptons in the bulk, and two families on the brane. In this case, one could concievably build a ship out of top quarks, bottom quarks, and tau leptons, which would live in the bulk. Note that this is pretty hard to comprehend, considering that they can make only one top quark a second at LHC, and to get enough top quarks to do something with (not to mention the fact that they decay in a fraction of a second), you'd need ~10^25 or so.
The Bulk is a theoretical concept in physics that refers to extra dimensions beyond the three dimensions of space and one dimension of time that we are familiar with. Some theories suggest that the Bulk could potentially be used to create a hyperdrive, a hypothetical propulsion system that would allow for faster-than-light travel.
Currently, there is no concrete evidence to support the idea of using the Bulk as a hyperdrive. The concept is purely theoretical and has not been tested or proven in any way. However, scientists continue to explore and study the concept as a potential avenue for advanced space travel.
The specifics of how a Bulk-based hyperdrive would work are still largely unknown. Some theories suggest that it would involve manipulating the extra dimensions of the Bulk in a way that would allow for faster-than-light travel. However, the exact mechanics and technology necessary for this are still purely speculative.
If a hyperdrive based on the Bulk were to be successfully developed, it could potentially revolutionize space travel as we know it. It could allow for much faster and more efficient travel between distant planets and galaxies, opening up new possibilities for exploration and colonization.
One potential limitation is the immense amount of energy that would be required to manipulate the extra dimensions of the Bulk. This energy requirement could make the technology impractical or even impossible to implement. Additionally, the effects of traveling at faster-than-light speeds on the human body are still largely unknown and could pose health risks.