kkrsusc/theory.md

@@ -45,6 +45,7 @@ R_{i\ell}\^\sigma(r;E_\text{F})$.
 ### Kohn-Sham susceptibility
 
 The transverse magnetic Kohn-Sham susceptibility is given by
+
 ```math
  \chi^{\sigma\bar{\sigma}}_{0,ij}(\vec{r}\,,\vec{r}\,';\omega)
    &=& -\frac{1}{\pi}\!\int^{E_\text{F}}\!\!\!\!\text{d}E \nonumber \\
@@ -63,6 +64,7 @@ $\chi\^{-+}$, respectively.
 
 Let us turn our attention to the Dyson equation for the GF, including
 the self-energy describing the coupling to the magnetic excitations:
+
 ```math
  G_{ij}^\sigma(\vec{r}\,,\vec{r}\,';E)
    &=& G_{0,ij}^\sigma(\vec{r}\,,\vec{r}\,';E) + \sum_{pq}\!\int\!\!\text{d}\vec{r}_1\!\int\!\!\text{d}\vec{r}_2\; \times \nonumber\