Better fidelity def

ITensor · Jun 25, 2024 · b23f5a6 · b23f5a6
1 parent 6eb3ced
commit b23f5a6
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/caches/beliefpropagationcache.jl b/src/caches/beliefpropagationcache.jl
@@ -45,7 +45,8 @@ function message_diff(message_a::Vector{ITensor}, message_b::Vector{ITensor})
   rhs *= c
   lhs /= norm(lhs)
   rhs /= norm(rhs)
-  return 1 - sqrt(abs(dot(lhs, rhs)))
+  f = abs(dot(lhs, rhs))^2
+  return 1 - f
 end
 
 struct BeliefPropagationCache{PTN,MTS,DM}