saving work for lecture 2

2021/Lecture_2/fig/BSE-GW.tex

@@ -36,18 +36,18 @@
 		{\textbf{\LARGE Bethe-Salpeter equation}
 			$$
 				\begin{pmatrix}
-					R & C  \\
-					-C^*  & -R^{*}
+					\bm{A} & \bm{B}  \\
+					-\bm{B}^*  & -\bm{A}^{*}
 				\end{pmatrix}
 				\begin{pmatrix}
-					X_m  \\
-					Y_m
+					\bm{X}_m  \\
+					\bm{Y}_m
 				\end{pmatrix}
 				=
 				\Omega_{m}
 				\begin{pmatrix}
-					X_m  \\
-					Y_m
+					\bm{X}_m  \\
+					\bm{Y}_m
 				\end{pmatrix}
 			$$
 		};