Lisa Randall - Extra Dimensional Particle Resonances at the LHC (1/3)
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Professor Lisa Randall, professor of physics at Harvard University, explains some of her theoretical models on extra-dimensional, warped spacetime to theoretical and experimental physicists at CERN and how, by using the Large Hadron Collider, physicists may soon be able to probe into higher dimensional resonances of particles, predicted by 5D Kaluza-Klein Theory, and even the Dilaton's which may exist and are predictions of the S-Duals in 11D M-Theory. Stephen Hawking has also made similar claims, while also stating that cosmological studies done on data from the new Planck Satellite mapping the Cosmic Microwave background may also confirm predictions of M-Theory. This talk will focus on the Kaluza-Klein mode of the Graviton, the particle which exchanges the gravitational force on a quantum scale. Such a particle has been more than a missing link in the Standard Model, its absence was responsible for having no description of gravity in the realm of quantum mechanics and required the development of M-Theory to fully recognise the function gravity must play in black holes and at the Big Bang. In whatever context the graviton itself may exist, we cannot observe it without building a collider the size of a galaxy, however Kaluza-Klein theory predicts resonances of the Graviton that can be accessible near our own brane world described by M-Theory. With The discovery of the Higgs Boson, physicists will be able to confirm if Supersymmetry is observable at LHC energies by studying the digamma decay mode for a discrepancy against the current Standard Model. If the cross-section of the 2 gamma rays emitted in a Higgs decay show a large disagreement with standard model results, then there may be Supersymmetric particles interacting with the Higgs. This may be observed when the LHC is at full operational power in 2015. Along with Supersymmetric particles coupling with the Higgs, certain particles predicted by Kaluza-Klein Theory include the scalar field Radion, or Radigraviton, a light particle which couples with the graviton and has the same decay patterns as a Higgs Boson. Moreover, since in the 5D brane rescales the mass scale of particles, giving them mass in the TeV scale, due to momentum being carried in this brane. Gravity in our dimension is a very weak interaction, and has 1/Planck scaled interactions. However in warped dimensions the gravitational interaction is strengthened by 16 orders of magnitude stronger, as the Kaluza-Klein partner to the graviton scales as 1/TeV scaled interactions. Space-Time warping in higher dimensions lowers mass scales for observed particles, pure Standard Model Gravitons would be of huge mass scales, impossible to reach using human technology. However, near the brane, higher dimensional partners of the graviton would carry its momentum in a 5D brane and would have a rescaled, much lower mass. Gravitons could therefore be generated by the LHC at certain, as of yet, unknown energy modes. Several modes may exist and oscillate at higher dimension modes which may lie outside the LHC energies at some point, as it passes the 5D brane outside the bulk space. Hence, if the LHC does have sufficient energy to reach one of the KK-mode graviton modes then it could be possible to detect Quantum Gravity at the LHC. Higher modes may also allow artificial black holes to be condensed out of higher fluxes of KK-mode gravitons. These black holes may only consist of a few, fermionic states of supersymmetric gravitons at the lowest energy state so it would instantly be destroyed by the Hawking Process. This would be a huge leap forward into studying M-Theory. Lisa Randall is an American theoretical physicist and a leading expert on particle physics and cosmology. She works on several of the competing models of string theory in the quest to explain the fabric of the universe.
Comments
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Excellent. Hopefully when they spin up the LHC to these higher energies over the next few years we'll see this. Randall could well be a nobel recipient along with several others.
Here is the case for larger and even more powerful accelerators. -
Neat Star Trek T Shirt @ 34 minutes. Where can I order one of those?
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Thank you. Raphael Santore
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Beautiful human female with a beautiful human brain. Lisa Randall, I genuinely admire you :)
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omfg you would think this pretentious title would assure your eardrums not be busted by a preposterous fumbling crackling explosion ..straight up starting.....w aa ste of time..warning
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Dang, Dr. Randall is the real deal, and It's nice to see the mathematical formalism.
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Good teacher, filled in detail sequence, something I always have trouble with because I agree with the Black Hole idea of information projection, time perceived now means everything happens at once , so I can see from this talk why the research is done this way.
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The production quality of this video is stunning. I particularly like the introducer's nifty "butt mike". Good thing he didn't break wind.
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This goes with my photonic soul theory. It has been stated by me that the soul id one or more photons trapped and or held by the biological body. It has been further stated by me as well that our thoughts exist in the 4th dimension while seeing into the third. Most specifically to make this a viable claim I think it would have the be assumed that the captured photon(s) must be slowed down by this process.
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At 25:16 she picks up a laser pointer that I can only guess is over sized because of the natural tendency of speakers to put their own laser pointer back in their pocket and walk out. Now if they walk out with this one they deserve all ridicule from their peers. Solves the problem by giving up a bit of space to save bits of time.
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No soundcheck....
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Oh, if I was thirty years younger and single......
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If I fucked her would I get smarter by osmosis?
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I am surprised she uses the term string theory. I thought m-theory was the more commonly used term now, perhaps I have been misled.
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what about this Ion Murgu Condition of Uniform Travel, him speak about a Space Time contraction into layers?
About any Ion Murgu Rreal Magic angles what can to appears around maybe deformed of interactions? -
It makes me sad that I do not understand a word of what she is saying. It's just way above my knowledge I have about space. Ans I'm passionate about the universe. I'm in awe when I see the size of the universe. I've devoured all of Tyson Degrasse and Krauss speeches and videos but I'm not able to go any further.
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I wrote my honours thesis on the first of these papers, which I hear in this talk has been cited over 3000 times now! Her work is quite incredible and beautiful. This is pure beauty and joy to me :)
http://arxiv.org/abs/hep-ph/9905221 -
I loved her book, Warped Passages, and have read it twice and will read it still again in the future. She is so brilliant =)
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