exchange sqrt and invsqrt in hope of fixing without thinking

Author: lkdvos

ext/TensorKitChainRulesCoreExt/constructors.jl

@@ -21,7 +21,7 @@ function ChainRulesCore.rrule(::Type{TensorMap{T}}, data::DenseVector,
     function TensorMap_pullback(Δt_)
         Δt = copy(unthunk(Δt_))
         for (c, b) in blocks(Δt)
-            scale!(b, TensorKit.sqrtdim(c))
+            scale!(b, TensorKit.invsqrtdim(c))
         end
         ∂data = P(Δt.data)
         return NoTangent(), ∂data, NoTangent()
@@ -37,7 +37,7 @@ function ChainRulesCore.rrule(::Type{<:DiagonalTensorMap}, data::DenseVector, ar
         # unclear if we're allowed to modify/take ownership of the input
         Δt = copy(unthunk(Δt_))
         for (c, b) in blocks(Δt)
-            scale!(b, TensorKit.sqrtdim(c))
+            scale!(b, TensorKit.invsqrtdim(c))
         end
         ∂data = P(Δt.data)
         return NoTangent(), ∂data, NoTangent()
@@ -51,7 +51,7 @@ function ChainRulesCore.rrule(::typeof(Base.getproperty), t::TensorMap, prop::Sy
             # unclear if we're allowed to modify/take ownership of the input
             t′ = typeof(t)(copy(unthunk(Δdata)), t.space)
             for (c, b) in blocks(t′)
-                scale!(b, TensorKit.invsqrtdim(c))
+                scale!(b, TensorKit.sqrtdim(c))
             end
             return NoTangent(), t′, NoTangent()
         end
@@ -70,7 +70,7 @@ function ChainRulesCore.rrule(::typeof(Base.getproperty), t::DiagonalTensorMap,
             # unclear if we're allowed to modify/take ownership of the input
             t′ = typeof(t)(copy(unthunk(Δdata)), t.domain)
             for (c, b) in blocks(t′)
-                scale!(b, TensorKit.invsqrtdim(c))
+                scale!(b, TensorKit.sqrtdim(c))
             end
             return NoTangent(), t′, NoTangent()
         end