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#quantum field theory explained

Quantum field theory is one of the most important and emerging physical theories. In this video, quantum field theory has been explained. These courses on quantum field theory are a beginner's introduction outside of mathematics. It contains the history as well as how quantum field theory has evolved over time, the challenges faced and the solutions provided.

00:00 – 01:08 – Purpose of this video
01:09 – 02:12 – Topics covered
02:13 – 06:08 – Introduction to quantum field theory
06:09 – 11:10 – Why we need a unified field theory
11:11 a.m. – 4:25 p.m. – History of QFT (classical era)
4:26 p.m. – 8:53 p.m. – The quantum era
20:54 – 22:31 – Why did quantum field theory emerge?
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 – QED issues
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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(16) Grigori Perelman
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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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