QFT: Find Poincare Group Generators in QFT

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SUMMARY

The discussion centers on identifying the generators of the Poincaré group within the context of quantum field theory (QFT), specifically in relation to classical scalar fields. Participants recommend key resources, including Steven Weinberg's "Quantum Field Theory" (vol. 1, chapter 2) for foundational understanding, and Kerson Huang's "Quantum Field Theory From Operators to Path Integrals" for explicit explanations. Noether's theorem is highlighted as a crucial tool for constructing these generators from a field theory Lagrangian.

PREREQUISITES
  • Understanding of quantum field theory concepts
  • Familiarity with Noether's theorem
  • Knowledge of classical scalar fields
  • Basic grasp of the Poincaré group and its significance in physics
NEXT STEPS
  • Study Steven Weinberg's "Quantum Field Theory" (vol. 1, chapter 2) for foundational insights on the Poincaré group
  • Read Kerson Huang's "Quantum Field Theory From Operators to Path Integrals" for detailed explanations of the generators
  • Explore the applications of Noether's theorem in constructing generators from Lagrangians
  • Investigate additional QFT textbooks, such as Peskin & Schroeder, for further context and examples
USEFUL FOR

Students and researchers in theoretical physics, particularly those focusing on quantum field theory, classical scalar fields, and the mathematical framework of the Poincaré group.

udaraabey
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Hi

I need to find the generators of the Poincare group in the representation of a clasical scalar field.
Every textbook I found let them as P and M. But any buk does not what are they.
I'm wondering if anybody help me to find this

Uda
 
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There's some good stuff about the Poincaré group and its generators in Weinberg's QFT book (vol. 1, chapter 2) but he doesn't even mention fields until later in the book. It's still a good place to look if you want to know the meaning of the different generators. If you want to construct them explicitly from a field theory Lagrangian, you would use Noether's theorem (as you probably know). There should be some stuff about how to do this in most QFT books. Have you checked Peskin & Shroeder? (I don't know where mine is, so I can't check it myself).
 
Thanks Fredrik

I found another book "Quantum Field Theory From Operators to Path Integrals" by Kerson Huang. It has a good explanation about generators of the Poincare group.
 

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