TEDxCaltech - Zvi Bern - Feynman Diagrams: Past, Present, Future
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- เผยแพร่เมื่อ 23 ก.พ. 2011
- Zvi Bern is currently Professor of Physics at UCLA. He received undergraduate degrees in physics and mathematics from MIT and a PhD in theoretical particle physics from UC Berkeley. He is widely known in theoretical physics for research into improved ways of calculating Feynman diagrams without using Feynman diagrams, offering new insights into quantum gravity and into experiments to be carried out at the Large Hadron Collider at CERN. He has won a Sloan Foundation Award and an Outstanding Junior Investigator Award from the U.S. Department of Energy.
About TEDx, x = independently organized event: In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized. (Subject to certain rules and regulations.)
On January 14, 2011, Caltech hosted TEDxCaltech, an exciting one-day event to honor Richard Feynman, Nobel Laureate, Caltech physics professor, iconoclast, visionary, and all-around "curious character." Visit TEDxCaltech.com for more details. - วิทยาศาสตร์และเทคโนโลยี
he had a great point about the value of creativity in solving problems
That was one of Richard Feynman's great strengths.
thank you all very much
A feynman digram is a visualization of possible particle scattering within in a probabilistic field. It depicts a particle interfering with its field through time. It is a doodle to figure, and cancel out, infinite and improbable loops within quantum interactions with fields. It isn't really applicable to other problems.
I like the last conclusion very much. Nothing more powerful than a good idea. Computers never would do that.
Awesome! Unfortunately I suspect that people, who get what Feynman diagrams are, often already know of the unitarity method (or N=8 SuGra for that matter)
@DigitizedSelf Agree, but he would never be able to explain his unitarity method to me in the 9 minutes. I am happy to have a vague idea about it, and if I ever get into a problem that I can not solve using Feynman diagrams, I will remember this talk and look up the method.
I thought it was interesting. I wish he had gone further into the Unitarian method. Apparently a lot of people didn't think so but I enjoyed it.
@DigitizedSelf I get your point now. Indeed, perhaps this is not really meant to be a TED talk
“Science is the belief in the ignorance of experts.” - Richard Feynman
@robke136 That's nice, but I'm fairly certain you'd run into it quite fast if you look for efficient ways of doing QCD calculations in perturbation theory - none the less it's good you got an idea of it anyway.
My original problem was that I generally consider TED talks to be of interest to larger section of society, whereas this only has interest to a small section, namely the ones who know what Feynman diagrams are but don't do QCD calculations.
Fast-forward more than 5 years later, has a follow-up video been made?
+1 one year later
Apologies for the delay; I took the long, seven year, route. ;-D
The answer appears to be 'Probably not.', which is a shame.
RWBHere what? Can you give a link of the calculations
does sheldon cooper works with you?
what are meaning of 25 infinity dimmension of Hilbert matrix of course we can use it as intermidiate level of calculation but for me cohherent methods closeup to Paul Andrien Dircac can be used even Delta is infinity value at 0 but it's peak of probability unitariry as well....acording to Feynman infinity imagination not so easy to follow exactly the same :) it 's fine to be close to physical intuition
but acording to cylinder of Einstein we get holes in sky, big bang neutron stars gravity waves much more evindent but space mision like LISA and probably much cheaper than LIGO....:)
microsatelites can carry inteferometers by cheap Chinees racket tehnology as well by NASA, ESA all together :)
evryday scan of the sky is well to detect more evidence of GRT not talking about Moon bases :) but in empty space (one hydrogen nucleus per m^3) or even less most probably cosmic void
so in such condition antimetter is existing in halo of Galaxy without interaction even interacting with barion metter is up to 0.0000000000001 accucrracy value taken from cylinder :) but enought to confirm calculation....
Wolfram Mathematica is wonderfull tool as well as Maxima in old times but capable much more things beautifull job of his team also acoring to neural package...so future is near about Honest Annie and Hal all together
as well more sophisticated knowledge in wolfram/aplha
What if the good idea was a quantum computer?
A good idea will knock the socks off a quantum computer.
People go over things so quickly. HOW can we look at things at 10 to the -3?
@robke136 Well, it's not like he's teaching you anything 'quite specific' though :-/
@DigitizedSelf Well no, Feynman diagrams are 'common knowledge' in the field of physics, while the unitarity method is something quite specific. I have actually learned a lot in this TED talk
nice talk and the jokes are good:)
That talk also has a very nice conclusion, which is deadly serious.
I did have visions of an ex-student with his magnificent grey beard wrapped around his Zimmer frame, whilst muttering something about solving the five loops diagram....
Ummmm , my brain is overheating
I started to yawn at about halfway. I shan't make to the end.
ADD?
Feynman's jokes were much better!
^v^
Kripke
I use an other thing than feynmann diagram.....
jokes? were there jokes in this?
I started to yawn at about halfway. I shan't make to the end.