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Faster than light travel or "jumping"
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<blockquote data-quote="bolen" data-source="post: 2271655" data-attributes="member: 1442"><p><strong>short answer</strong> It is overhyped and going in the wrong direction</p><p></p><p><strong>Long answer</strong> We have a good model of three forces of nature (except gravity) at low energies (lower then a couple of TeV) String theory tries the same approaches that worked for the standard model but instead of particles (1 d objects) it uses strings (2 D objects). Unfortunately it has to invent other dimensions the latest is 12 spatial dimensions with 1 time. It seems to have all the ingredients needed for a final theory </p><p></p><p>Except </p><p>- It has no testable predictions </p><p>- You end up with hundreds of free parameters</p><p>- It is not clear why one should begin with flat spacetime at the fundamental plank length</p><p>- Many other more technical questions</p><p></p><p>I work in Loop quantum gravity in this we do not try to unite the forces we just try to understand how to create a quantum theory of gravity. In some ways it is less ambitious then strings but I think we are on more solid mathematical ground.</p><p></p><p><em>By the way if I had posted the above on a physics board the moderators would have closed the thread. I am not being very diplomatic (but neither are the string people)</em></p></blockquote><p></p>
[QUOTE="bolen, post: 2271655, member: 1442"] [B]short answer[/B] It is overhyped and going in the wrong direction [B]Long answer[/B] We have a good model of three forces of nature (except gravity) at low energies (lower then a couple of TeV) String theory tries the same approaches that worked for the standard model but instead of particles (1 d objects) it uses strings (2 D objects). Unfortunately it has to invent other dimensions the latest is 12 spatial dimensions with 1 time. It seems to have all the ingredients needed for a final theory Except - It has no testable predictions - You end up with hundreds of free parameters - It is not clear why one should begin with flat spacetime at the fundamental plank length - Many other more technical questions I work in Loop quantum gravity in this we do not try to unite the forces we just try to understand how to create a quantum theory of gravity. In some ways it is less ambitious then strings but I think we are on more solid mathematical ground. [I]By the way if I had posted the above on a physics board the moderators would have closed the thread. I am not being very diplomatic (but neither are the string people)[/I] [/QUOTE]
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Faster than light travel or "jumping"
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