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Foundational Physics Research Methods
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Module 9
The Effective Field Theory Framework
1
The EFT Philosophy: Scales and Expansions
Articulate the EFT philosophy: separation of scales and systematic low-energy expansion.
2
Building Effective Lagrangians from Low-Energy Physics
Construct an effective Lagrangian by identifying the low-energy degrees of freedom and symmetries.
Power Counting in the Lagrangian
Organize terms in an effective Lagrangian using power-counting rules.
4
EFT Validity and Breakdown Signals
Determine the regime of validity of an EFT and recognize signals of its breakdown.
5
Effective Field Theory in Action
Analyze a physical problem (e.g., Fermi theory of weak interactions) from an EFT perspective.
6
Renormalization Group and EFT Justification
Explain how the renormalization group provides a formal justification for the EFT framework.
Previous module
The Renormalization Group
Next module
Geometric and Topological Methods