Grassmann Gaussian integral
= Grassmann Gaussian integral
A Grassmann Gaussian integral satisfies $\int D\bar\psi D\psi\,e^{-\bar\psi A\psi}=\det A$. Adding Grassmann sources and completing the square produces an exponent containing $A^{-1}$.
= Grassmann Gaussian integral
A Grassmann Gaussian integral satisfies $\int D\bar\psi D\psi\,e^{-\bar\psi A\psi}=\det A$. Adding Grassmann sources and completing the square produces an exponent containing $A^{-1}$.