From 8896bb17f8a797f8e058df257168317df0c3cc16 Mon Sep 17 00:00:00 2001
From: Matt Fishman <mtfishman@users.noreply.github.com>
Date: Tue, 29 Oct 2024 14:51:49 -0400
Subject: [PATCH] Delete broken example (#91)

---
 Project.toml                                  |  2 +-
 examples/gate_evolution/Project.toml          |  3 ++
 examples/gate_evolution/mpo_gate_evolution.jl |  2 +-
 .../trotter_suzuki_decomposition.jl           | 32 -------------------
 4 files changed, 5 insertions(+), 34 deletions(-)
 create mode 100644 examples/gate_evolution/Project.toml
 delete mode 100644 examples/gate_evolution/trotter_suzuki_decomposition.jl

diff --git a/Project.toml b/Project.toml
index 1ddd8f5..689fa1d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "ITensorMPS"
 uuid = "0d1a4710-d33b-49a5-8f18-73bdf49b47e2"
 authors = ["Matthew Fishman <mfishman@flatironinstitute.org>", "Miles Stoudenmire <mstoudenmire@flatironinstitute.org>"]
-version = "0.3.0"
+version = "0.3.1"
 
 [deps]
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
diff --git a/examples/gate_evolution/Project.toml b/examples/gate_evolution/Project.toml
new file mode 100644
index 0000000..a355267
--- /dev/null
+++ b/examples/gate_evolution/Project.toml
@@ -0,0 +1,3 @@
+[deps]
+ITensorMPS = "0d1a4710-d33b-49a5-8f18-73bdf49b47e2"
+ITensors = "9136182c-28ba-11e9-034c-db9fb085ebd5"
diff --git a/examples/gate_evolution/mpo_gate_evolution.jl b/examples/gate_evolution/mpo_gate_evolution.jl
index b64f170..c61813b 100644
--- a/examples/gate_evolution/mpo_gate_evolution.jl
+++ b/examples/gate_evolution/mpo_gate_evolution.jl
@@ -57,7 +57,7 @@ function main(; N=10, cutoff=1E-8, δt=0.1, ttotal=5.0)
     rho = apply(gates, rho; cutoff, apply_dag=true)
     t += δt
   end
-  @show inner(psi, rho, psi)
+  @show inner(psi', rho, psi)
   @show inner(psi, psi)
   @show tr(rho)
 
diff --git a/examples/gate_evolution/trotter_suzuki_decomposition.jl b/examples/gate_evolution/trotter_suzuki_decomposition.jl
deleted file mode 100644
index 6222470..0000000
--- a/examples/gate_evolution/trotter_suzuki_decomposition.jl
+++ /dev/null
@@ -1,32 +0,0 @@
-using ITensors, ITensorMPS
-
-function heisenberg(N)
-  os = Sum{Op}()
-  for j in 1:(N - 1)
-    os += "Sz", j, "Sz", j + 1
-    os += 0.5, "S+", j, "S-", j + 1
-    os += 0.5, "S-", j, "S+", j + 1
-  end
-  return os
-end
-
-function main(N; nsteps, order)
-  ℋ = heisenberg(N)
-  s = siteinds("S=1/2", N)
-  ψ₀ = MPS(s, n -> isodd(n) ? "↑" : "↓")
-  t = 1.0
-  𝒰 = exp(im * t * ℋ; alg=Trotter{order}(nsteps))
-  U = Prod{ITensor}(𝒰, s)
-  H = ITensor(ℋ, s)
-  𝒰ʳᵉᶠ = exp(im * t * ℋ)
-  Uʳᵉᶠ = ITensor(𝒰ʳᵉᶠ, s)
-  Uʳᵉᶠψ₀ = replaceprime(Uʳᵉᶠ * prod(ψ₀), 1 => 0)
-  return norm(prod(U(ψ₀)) - Uʳᵉᶠψ₀)
-end
-
-@show main(4; nsteps=10, order=1)
-@show main(4; nsteps=10, order=2)
-@show main(4; nsteps=10, order=4)
-@show main(4; nsteps=100, order=1)
-@show main(4; nsteps=100, order=2)
-@show main(4; nsteps=100, order=4)