implement the optimal contraction ordering for BTRG

VictorVanthilt · Feb 14, 2025 · fbffcd3 · fbffcd3
1 parent d3ae4a1
commit fbffcd3
Showing 1 changed file with 7 additions and 5 deletions.
diff --git a/src/schemes/btrg.jl b/src/schemes/btrg.jl
@@ -54,11 +54,13 @@ function step!(scheme::BTRG, trunc::TensorKit.TruncationScheme)
     S1 = scheme.S1
     S2 = scheme.S2
 
-    @tensor opt = true scheme.T[-1 -2; -3 -4] := D[-1 1; 8] * S1[2; 1] * B[-2; 3 2] *
-                                                 S2[3; 4] *
-                                                 C[4; 5 -3] *
-                                                 S1[5; 6] * A[7 6; -4] * S2[8; 7]
-
+    @tensor scheme.T[-1 -2; -3 -4] := D[-1 7; 4] *
+                                      S1[1; 7] *
+                                      B[-2; 3 1] *
+                                      S2[3; 2] *
+                                      C[2; 8 -3] *
+                                      S1[8; 5] *
+                                      A[6 5; -4] * S2[4; 6]
     scheme.S1 = S1′
     scheme.S2 = S2′
     return scheme