Quantum Field Theory as the Language of Physics by Nathan Seiberg

Explore the fundamental role of Quantum Field Theory in modern physics through this insightful 35-minute lecture by Nathan Seiberg at the International Centre for Theoretical Sciences. Delve into the evolution from classical physics to quantum mechanics, understanding how Quantum Field Theory has become the universal language of physics. Compare the limitations of calculus with the expansive capabilities of QFT, and examine various presentations of the theory, including the abstract approach and Lagrangian formulation. Discover the strengths and weaknesses of current QFT models, and consider the potential need for reformulation. Conclude with a thought-provoking Q&A session, gaining a broader perspective on this cornerstone of theoretical physics.

Start
Quantum Field Theory as the Language of Physics
Classical Physics
Calculus as the Language of Classical Physics and more
Quantum Physics
Quantum Field Theory is Everywhere
Calculus vs. Quantum Field Theory
Presentations of quantum field theory
Abstract presentation of QFT
Lagrangian
Lagrangian's are meaningful and useful when they are weakly coupled
Lagrangian's are not good enough
Suggest that QFT should be reformulated
Thank you for your attention! Happy Birthday
Q&A