Quantum field theory | Quantum field theory lectures | Quantum field theory explained

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Quantum field theory is one of the most important and emerging physical theory. In this video, quantum field theory has been explained. This quantum field theory lectures are a beginner's introduction keep apart the mathematics. It contains the history as well as how quantum field theory evolved through time, the challenges faced and the solutions provided.

00:00 - 01:08 - Objective of this video
01:09 - 02:12 - Topics covered
02:13 - 06:08 - Introduction to Quantum field theory
06:09 - 11:10 - Why do we need a unified field theory
11:11 - 16:25 - History of QFT (Classical era)
16:26 - 20:53 - The quantum era
20:54 - 22:31 - Why Quantum field theory emerged?
22:32 - 29:41 - What is spontaneous emission?
29:42 - 32:39 - What is QED and QCD ?
32:40 - 34:16 - What is Quantum electrodynamics?
34:17 - 37:22 - Feynman diagram
37:23 - 39:24 - Problems of QED
39:25 - 41:15 - Dirac equation
41:16 - 42:35 - Infinities, divergence
42:36 - 44:04 - S Matrix theory
44:05 - 45:33 - Renormalization and the solution
45:34 - 49:39 - What is renormalization
49:40 - 50:09 - The solution
50:10 - 51:52 - Summary and conclusion

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My name is Shounak. I teach in a college. My subject of specialization is the general theory of relativity, tensor calculus, and topology. I also teach communicative English.

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[jack.d]

Just want to say thank you Shounak for sharing your vast physics knowledge and strong communication skills for the public. Great presentation.

[dawarjdeka]

Thanks a lot for this beautiful lecture

[pb]

Thank for reminding all of these, as I am almost forget it, as I had learn it during my 4th Sem 2019.🙏🙏🙏

[riteshparmar]

It's really enjoying lecture, after watching David Tongs lecture on The Royal Institution YouTube channel. I was interested in qft so started to attain his full lectures, but i was not able to grasp the key ideas, because of my incapability. But in this video you've done great job for making clear distinction between QED and QCD as I was confused with gauge theory and gft.