Fix the error of the commutation relation of canonical bosons.

Quantum-Many-Body · Sep 15, 2023 · 35264d2 · 35264d2
1 parent 0afaeba
commit 35264d2
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/src/QuantumSystems.jl b/src/QuantumSystems.jl
@@ -242,7 +242,7 @@ function permute(id₁::FID{:f}, id₂::FID{:f})
 end
 function permute(id₁::FID{:b}, id₂::FID{:b})
     if id₁'==id₂
-        return (Operator(id₁.nambu==creation ? 1 : -1), Operator(1, id₂, id₁))
+        return (Operator(iscreation(id₁) ? -1 : +1), Operator(1, id₂, id₁))
     else
         return (Operator(1, id₂, id₁),)
     end

diff --git a/test/QuantumSystems.jl b/test/QuantumSystems.jl
@@ -123,8 +123,8 @@ end
     opt = Operator(1.0, id₁, id₂)
     @test latexstring(opt) == "b^{\\dagger}_{2, 1, ↓}b^{}_{2, 1, ↓}"
 
-    @test permute(id₁, id₂) == (Operator(+1), Operator(1, id₂, id₁))
-    @test permute(id₂, id₁) == (Operator(-1), Operator(1, id₁, id₂))
+    @test permute(id₁, id₂) == (Operator(-1), Operator(1, id₂, id₁))
+    @test permute(id₂, id₁) == (Operator(+1), Operator(1, id₁, id₂))
     @test permute(id₁, id₄) == (Operator(1, id₄, id₁),)
     @test permute(id₄, id₁) == (Operator(1, id₁, id₄),)
 end