Skip to content

Add MultilineMPO space getters #407

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
lkdvos merged 2 commits into from
Mar 30, 2026
Merged

Add MultilineMPO space getters #407

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
498490a
add space definitions for multilineMPO
lkdvos Mar 30, 2026
d2d761e
add tests
lkdvos Mar 30, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 6 additions & 0 deletions src/operators/multilinempo.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -43,3 +43,9 @@ function Base.:*(mpo1::MultilineMPO, mpo2::MultilineMPO)
size(mpo1) == size(mpo2) || throw(ArgumentError("dimension mismatch"))
return Multiline(map(*, zip(mpo1, mpo2)))
end

for f_space in (:physicalspace, :left_virtualspace, :right_virtualspace)
@eval $f_space(t::MultilineMPO, i::Int, j::Int) = $f_space(t[i], j)
@eval $f_space(t::MultilineMPO, I::CartesianIndex{2}) = $f_space(t, Tuple(I)...)
@eval $f_space(t::MultilineMPO) = map(Base.Fix1($f_space, t), eachindex(t))
end
14 changes: 12 additions & 2 deletions test/operators/mpo.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -86,10 +86,10 @@ end

@testset "InfiniteMPO" begin
P = ℂ^2
V = ℂ^2
T = Float64

H1 = randn(T, P ← P)
H1 += H1'
H1 = randn(T, V ⊗ P ← P ⊗ V)
H = InfiniteMPO([H1])

@test !isfinite(H)
Expand All @@ -98,6 +98,16 @@ end
@test GeometryStyle(H) == InfiniteChainStyle()
@test OperatorStyle(typeof(H)) == MPOStyle()
@test OperatorStyle(H) == MPOStyle()

@test physicalspace(H, 1) == P
@test left_virtualspace(H, 1) == V
@test left_virtualspace(H, 4) == V
@test right_virtualspace(H, 1) == V

multiH = MultilineMPO([H, H])
@test physicalspace(multiH, 1, 1) == P
@test left_virtualspace(multiH, 1, 1) == left_virtualspace(multiH, 2, 1) == V
@test right_virtualspace(multiH, CartesianIndex(1, 2)) == V
end

@testset "Adapt" for V in (ℂ^2, U1Space(-1 => 1, 0 => 1, 1 => 1))
Expand Down
Loading