New posts in Path Integral

How does the functional measure transform under a field redefinition?

Grassmann's variables under integration

One-loop Correction to Effective Action

Feynman's path integral and energy discretization?

Gaussian integral with imaginary coefficients and Wick rotation

Why does spin appear in quantum systems but not classical systems?

In what sense is the proper/effective action $\Gamma[\phi_c]$ a quantum-corrected classical action $S[\phi]$?

Derivative interaction: $\mathcal{H}_\mathrm{int}\neq - \mathcal{L}_\mathrm{int}$. Question about Feynman Rules

Why is there no anomaly when particle mechanics is quantized?

Particle creation by a source as explained in A. Zee's QFT in a Nutshell