From f3f1519fec609ceab5e9a392a36c3945f9827105 Mon Sep 17 00:00:00 2001
From: Mingru Yang <mingruy@uci.edu>
Date: Sun, 19 Mar 2023 11:05:45 +0100
Subject: [PATCH] Update idmrg.h

Make the index match if resume from a returned idmrg.
---
 idmrg.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/idmrg.h b/idmrg.h
index ca05649..9beba3b 100644
--- a/idmrg.h
+++ b/idmrg.h
@@ -124,6 +124,7 @@ idmrg(MPS & psi,
 
     if(psi(0))
         {
+        psi.ref(1) *= psi(0);
         lastV = dag(psi(0));
         lastV /= norm(lastV);
         lastV.apply(detail::PseudoInvert(0));