Quantum Field Theory, Anthony Zee | Lecture 1 of 4
First of four lectures on Quantum Field Theory given by Anthony Zee at the African Summer Theory Institute in 2004. Lectures can also be found here: ...
+Travis Cook Most of the lecture series I see on youtube fail to take advantage of video and audio technology to make any given subject matter more easily understood.Makes me think that the reason our scientific progress hasn't been more advanced is that our teaching methods basically suck.
This guy declares he's not promoting his book but the first part to this
lecture, he took each and every opportunity to mention it, again and again
and again .....
On top of that, if he wasn't pushing his book, he was talking about himself
and name-dropping like a B-52 bomber.
I got zero problem in Zee mentioning his book and himself but there's a
limit to that and I'm afraid his ego got the better of him and he turned an
extremely enlightening talk into a somewhat indulgent publicity exercise
for himself.
This guy is smart, no doubt about that but if you wish to integrate your
own interests into such a lecture, then you better make sure you have a
delivery like Feynman - he made self-promotion a 'fun thing' to watch and
although he had an ego the size of a brane, he knew how to negotiate it and
still remain entertaining and enlightening.
But wasn't his book about the subject he was giving a lecture on, and wasn't it then used as a pretext to explain the different approaches to the subject? I feel like I'm pretty sensitive to pretense, but maybe you caught something I missed.
+Manhattan Prject : Don't Mess Up "is sr wrong, if it states that information cannot travel faster than light? Fuck Albert EINSTEIN"The math of relativity proves that particles with mass move at v < c, particles without mass move at c. Beyond that there are two equally valid interpretations for v > c. BOTH predict that matter particles can only move at v < c and massless particles move at c. However, with one interpretation FTL effects like quantum entanglement do not need to violate causality. That interpretation requires a preferred frame. SR CANNOT disprove a preferred frame because the very mathematics of it allows an observer to prefer any frame they wish. Nature could very well prefer a frame.The two interpretations:Preferred frame:1) FTL is NOT possible unless you alter the void (like warp drive). FTL does not cause backward time travel. 2) Requires preferred frame which mathematically can ALWAYS exist in SR and GR can have one also. No one has found evidence for a preferred frame but with the way the math works that is expected.Standard SR:1) FTL is NOT possible unless you alter the void (like warp drive). FTL does cause backward time travel.2) No preferred frame.3) Entanglement seriously threatens causality but physicist say this interpretation is still valid because entanglement does not transmit "useful" information we can signal with.BOTH interpretations are still valid. No one knows which one is right because both predict the exact same mathematics for all v < c. Both form identical SR mathematics, identical field theories, and identical gravity theories from the event horizon outwards.Modern physics knows a lot less than people think it does. Sure we have math that can do a lot but there is a LOT more room in how these results can be interpreted than people think there is. That's usually how science works. We develop theories based off of experiments. The math and the conclusions of the theories are rarely changed too much overtime BUT the underlying understanding behind all of it can change drastically.
+Manhattan Project_Mission_Kill All Fags General relativity explains how matter on macroscopic scales and at all speeds interacts with other matter. General relativity isn't a theory about dark matter, hubble's constant, or quantum mechanics, you are correct about that.
+aoflex hey bro i think general relativity does not make any sense, it does not tell us anythin about the gravity, dark matter, expanding of universe, higgs mechanism, quantum information, quantum entanglement, big bang and most importantly it cannot explain us about the constants of universe like plank units and c.
Quantum mechanics does not restrict the speed at which information can travel. Yet no information can travel faster than light in a vacuum. Enforcing special relativity on QM fixes this. You need to have some graduate physics courses under your belt before you can follow the mathematics. Then pick up books on QFT like //amzn.to/1jwXiMm and //amzn.to/1omw9Au and take a course online or in a class. Youtube is not a place to teach it:P
Quantum mechanics describes the probabilistic nature of reality, particularly at small length scales. Quantum field theory combines quantum mechanics with special relativity, making it the most accurate theory of reality yet postulated. It's expected that there is a theory combining QFT and gravity (general relativity) that will provide insight into black holes, the big bang, cosmology, and particle physics. We don't have this theory yet.
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