Interaction Picture

Quantum Field Theory · Part 4

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Table of Contents

  1. 1.1.1 Three Pictures of Quantum Mechanics
  2. 2.1.2 Constructing the Interaction Picture
  3. 3.1.3 Operator Evolution in the Interaction Picture
  4. 4.1.4 The Time Evolution Operator
  5. 5.1.5 Connection to the S-Matrix
  6. 6.Key Concepts

Key Equations

$$i\hbar\frac{d}{dt}|\psi_S(t)\rangle = H|\psi_S(t)\rangle$$
$$H = H_0 + H_{\text{int}}$$
$$\boxed{i\frac{d}{dt}|\psi_I(t)\rangle = H_{\text{int},I}(t)\,|\psi_I(t)\rangle}$$
$$|\psi_I(t)\rangle = U(t,t_0)\,|\psi_I(t_0)\rangle$$

Equations are rendered with MathJax in the PDF with professional LaTeX typesetting.

Course Context

This PDF is part of the Quantum Field Theory course on CoursesHub.World. Free online course in Quantum Field Theory (QFT). 8 parts covering classical field theory, canonical quantization, path integrals, QED, non-Abelian gauge theories, renormalization, the Standard Model,...

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