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QFT handbook

Reference

A definition when a word is unfamiliar. A formula when a calculation stalls. A convention when two sources disagree.

Use this handbook alongside the lessons and Library. Each entry gives a usable answer and a route to the full explanation. To compare particular theories, explore Models.

The handbook

  1. Language and conventions

    Find the meaning of a term, read a symbol, or check a sign convention.

  2. Formulas

    Find core formulas and practical guides to propagators, scattering, and renormalization.

  3. Results and structures

    Use general QFT results with their hypotheses, and identify the operators and symmetries they constrain.

  4. Sources and history

    Locate sources for further study and read the context of foundational results.