From 06ddb91ee9b5462572d1eac4753aa5c0301fc2f1 Mon Sep 17 00:00:00 2001
From: Markus Hauru <markus@mhauru.org>
Date: Wed, 9 Sep 2020 13:35:15 +0200
Subject: [PATCH] Change normalization in reality check

---
 src/genericmera.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/genericmera.jl b/src/genericmera.jl
index cfc998f..c6c94d6 100644
--- a/src/genericmera.jl
+++ b/src/genericmera.jl
@@ -734,7 +734,7 @@ function expect(op, m::GenericMERA, pars = (;), opscale = 1, evalscale = 1)
     rho = densitymatrix(m, evalscale, pars)
     op = ascended_operator(op, m, evalscale)
     value = dot(rho, op)
-    if abs(imag(value)/norm(op)) > 1e-13
+    if abs(imag(value)/(norm(op)*norm(rho))) > 1e-13
         @warn("Non-real expectation value: $value")
     end
     return real(value)