v0.13.9 (#374)

* update changelog

* move changelog to docs

* bump v0.13.9

* regenerate examples

* prepare for release

Author: lkdvos

CHANGELOG.md

@@ -1,18 +1,18 @@
 cff-version: 1.2.0
 message: "If you use this software, please cite it as below."
 authors:
-- family-names: "Van Damme"
-  given-names: "Maarten"
-  orcid: "https://orcid.org/0000-0002-1558-0568"
 - family-names: "Devos"
   given-names: "Lukas"
   orcid: "https://orcid.org/0000-0002-0256-4200"
+- family-names: "Van Damme"
+  given-names: "Maarten"
+  orcid: "https://orcid.org/0000-0002-1558-0568"
 - family-names: "Haegeman"
   given-names: "Jutho"
   orcid: "https://orcid.org/0000-0002-0858-291X"
 
 title: "MPSKit"
-version: 0.13.5
+version: 0.13.9
 doi: 10.5281/zenodo.10654900
-date-released: 2025-09-05
+date-released: 2026-02-03
 url: "https://github.com/QuantumKitHub/MPSKit.jl"

CITATION.cff

@@ -1,6 +1,6 @@
 name = "MPSKit"
 uuid = "bb1c41ca-d63c-52ed-829e-0820dda26502"
-version = "0.13.8"
+version = "0.13.9"
 authors = "Lukas Devos, Maarten Van Damme and contributors"
 
 [deps]

Project.toml

@@ -70,6 +70,7 @@ makedocs(;
         "Examples" => "examples/index.md",
         "Library" => "lib/lib.md",
         "References" => "references.md",
+        "Changelog" => "changelog.md",
     ],
     checkdocs = :exports,
     doctest = true,

docs/make.jl

@@ -0,0 +1,79 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## Guidelines for updating this changelog
+
+When making changes to this project, please update the "Unreleased" section with your changes under the appropriate category:
+
+- **Added** for new features.
+- **Changed** for changes in existing functionality.
+- **Deprecated** for soon-to-be removed features.
+- **Removed** for now removed features.
+- **Fixed** for any bug fixes.
+
+When releasing a new version, move the "Unreleased" changes to a new version section with the release date.
+
+## [Unreleased](https://github.com/QuantumKitHub/MPSKit.jl/compare/v0.13.9...HEAD)
+
+### Added
+
+### Changed
+
+### Deprecated
+
+### Removed
+
+### Fixed
+
+## [0.13.9](https://github.com/QuantumKitHub/MPSKit.jl/compare/v0.13.8...v0.13.9) - 2026-02-03
+
+### Added
+
+- `LocalPreferences.toml` file to ensure `TensorOperations` properly precompiles on testing
+  infrastructure
+- `GeometryStyle` and `OperatorStyle` traits for dispatching on finite/infinite geometry and
+  operator types ([#352](https://github.com/QuantumKitHub/MPSKit.jl/pull/352), [#354](https://github.com/QuantumKitHub/MPSKit.jl/pull/354))
+- `Base.isfinite` methods for MPS types ([#347](https://github.com/QuantumKitHub/MPSKit.jl/pull/347))
+- Bose-Hubbard example ([#342](https://github.com/QuantumKitHub/MPSKit.jl/pull/342))
+- WindowMPS example update ([#350](https://github.com/QuantumKitHub/MPSKit.jl/pull/350))
+- Multifusion category compatibility ([#297](https://github.com/QuantumKitHub/MPSKit.jl/pull/297))
+
+### Fixed
+
+- Dynamic tolerances yielded `NaN` during the initialization stage due to `1 / sqrt(iter)`
+  where `iter = 0` ([#335](https://github.com/QuantumKitHub/MPSKit.jl/pull/335))
+- `InfiniteMPOHamiltonian` environments with low bond dimension and high Krylov dimension now are properly
+  clamped ([#335](https://github.com/QuantumKitHub/MPSKit.jl/pull/335))
+- Logical operator precedence in `getproperty` function ([#346](https://github.com/QuantumKitHub/MPSKit.jl/pull/346))
+- Typo in `VUMPSSvdCut` ([#361](https://github.com/QuantumKitHub/MPSKit.jl/pull/361))
+- Typo in time formatting for logs ([#336](https://github.com/QuantumKitHub/MPSKit.jl/pull/336))
+- Domain/codomain of `MPODerivativeOperator` ([#370](https://github.com/QuantumKitHub/MPSKit.jl/pull/370))
+- In-place operations handled more carefully ([#337](https://github.com/QuantumKitHub/MPSKit.jl/pull/337))
+- Orthogonalization algorithms now use correct methods ([#373](https://github.com/QuantumKitHub/MPSKit.jl/pull/373))
+
+### Changed
+
+- The `changebonds(state, ::RandExpand)` algorithm now no longer has to perform a
+  truncated SVD to obtain the desired spaces, and instead sample the space directly
+  and then generates a random isometry. This should be slightly more performant, but
+  otherwise equivalent ([#335](https://github.com/QuantumKitHub/MPSKit.jl/pull/335))
+- `IDMRG` refactored to follow the `IterativeSolver` interface and share code between
+  `IDMRG` and `IDMRG2` ([#348](https://github.com/QuantumKitHub/MPSKit.jl/pull/348))
+- Bumped compatibility for TensorKit 0.16 and MatrixAlgebraKit 0.6 ([#365](https://github.com/QuantumKitHub/MPSKit.jl/pull/365))
+- Removed `_left_orth` and `_right_orth` workarounds in favor of new orthogonalization methods
+- Reduced allocation while computing Galerkin error ([#366](https://github.com/QuantumKitHub/MPSKit.jl/pull/366))
+- Updated `show` methods to reflect new TensorKit printing ([#341](https://github.com/QuantumKitHub/MPSKit.jl/pull/341))
+- More informative errors for finite MPS ([#367](https://github.com/QuantumKitHub/MPSKit.jl/pull/367))
+- Minor documentation and docstring improvements ([#363](https://github.com/QuantumKitHub/MPSKit.jl/pull/363), [#372](https://github.com/QuantumKitHub/MPSKit.jl/pull/372), [#371](https://github.com/QuantumKitHub/MPSKit.jl/pull/371))
+
+### Deprecated
+
+### Removed
+
+## [0.13.8](https://github.com/QuantumKitHub/MPSKit.jl/releases/tag/v0.13.8) - 2024-10-31
+
+See full history and previous releases on [GitHub](https://github.com/QuantumKitHub/MPSKit.jl/releases).

docs/src/changelog.md

@@ -147,11 +147,11 @@
    "file_extension": ".jl",
    "mimetype": "application/julia",
    "name": "julia",
-   "version": "1.12.0"
+   "version": "1.12.4"
   },
   "kernelspec": {
    "name": "julia-1.12",
-   "display_name": "Julia 1.12.0",
+   "display_name": "Julia 1.12.4",
    "language": "julia"
   }
  },

docs/src/examples/classic2d/1.hard-hexagon/index.md

@@ -24,7 +24,7 @@
   {
    "cell_type": "markdown",
    "source": [
-    "The hamiltonian is defined on a finite lattice with periodic boundary conditions,\n",
+    "The Hamiltonian is defined on a finite lattice with periodic boundary conditions,\n",
     "which can be implemented as follows:"
    ],
    "metadata": {}
@@ -45,8 +45,8 @@
     "## Exact diagonalisation\n",
     "\n",
     "In MPSKit, there is support for exact diagonalisation by leveraging the fact that applying\n",
-    "the hamiltonian to an untruncated MPS will result in an effective hamiltonian on the center\n",
-    "site which implements the action of the entire hamiltonian. Thus, optimizing the middle\n",
+    "the Hamiltonian to an untruncated MPS will result in an effective Hamiltonian on the center\n",
+    "site which implements the action of the entire Hamiltonian. Thus, optimizing the middle\n",
     "tensor is equivalent to optimixing a state in the entire Hilbert space, as all other tensors\n",
     "are just unitary matrices that mix the basis."
    ],
@@ -108,7 +108,7 @@
   {
    "cell_type": "markdown",
    "source": [
-    "We can then calculate the momentum of the groundstate as the expectation value of this\n",
+    "We can then calculate the momentum of the ground state as the expectation value of this\n",
     "operator. However, there is a subtlety because of the degeneracies in the energy\n",
     "eigenvalues. The eigensolver will find an orthonormal basis within each energy subspace, but\n",
     "this basis is not necessarily a basis of eigenstates of the translation operator. In order\n",
@@ -203,7 +203,7 @@
   {
    "cell_type": "markdown",
    "source": [
-    "Excitations on top of the groundstate can be found through the use of the quasiparticle\n",
+    "Excitations on top of the ground state can be found through the use of the quasiparticle\n",
     "ansatz. This returns quasiparticle states, which can be converted to regular `FiniteMPS`\n",
     "objects."
    ],
@@ -260,11 +260,11 @@
    "file_extension": ".jl",
    "mimetype": "application/julia",
    "name": "julia",
-   "version": "1.12.0"
+   "version": "1.12.4"
   },
   "kernelspec": {
    "name": "julia-1.12",
-   "display_name": "Julia 1.12.0",
+   "display_name": "Julia 1.12.4",
    "language": "julia"
   }
  },

docs/src/examples/classic2d/1.hard-hexagon/main.ipynb

@@ -61,7 +61,7 @@ En_2, st_2 = excitations(H, QuasiparticleAnsatz(), ψ, envs; sector = SU2Irrep(2
 ````
 
 ````
-0.7989253589480493
+0.798925358948053
 ````
 
 We can go even further and doublecheck the claim that ``S = 1`` is an edge excitation, by plotting the energy density.
@@ -102,7 +102,7 @@ f = fit(Ls .^ (-2), ΔEs, 1)
 ````
 
 ````
-0.4517340158584577
+0.4517340158584072
 ````
 
 ````julia
@@ -140,23 +140,23 @@ println("minimum @k = $(kspace[idx]):\t ΔE = $(ΔE)")
 ````
 
 ````
+[ Info: Found excitations for momentum = 1.8849555921538759
+[ Info: Found excitations for momentum = 1.6755160819145563
+[ Info: Found excitations for momentum = 2.0943951023931953
+[ Info: Found excitations for momentum = 1.4660765716752369
 [ Info: Found excitations for momentum = 0.0
 [ Info: Found excitations for momentum = 0.20943951023931953
-[ Info: Found excitations for momentum = 0.41887902047863906
-[ Info: Found excitations for momentum = 0.6283185307179586
-[ Info: Found excitations for momentum = 0.8377580409572781
-[ Info: Found excitations for momentum = 1.0471975511965976
 [ Info: Found excitations for momentum = 1.2566370614359172
-[ Info: Found excitations for momentum = 1.4660765716752369
-[ Info: Found excitations for momentum = 1.6755160819145563
-[ Info: Found excitations for momentum = 1.8849555921538759
-[ Info: Found excitations for momentum = 2.0943951023931953
+[ Info: Found excitations for momentum = 2.9321531433504737
+[ Info: Found excitations for momentum = 0.41887902047863906
 [ Info: Found excitations for momentum = 2.303834612632515
+[ Info: Found excitations for momentum = 0.6283185307179586
 [ Info: Found excitations for momentum = 2.5132741228718345
+[ Info: Found excitations for momentum = 1.0471975511965976
 [ Info: Found excitations for momentum = 2.722713633111154
-[ Info: Found excitations for momentum = 2.9321531433504737
 [ Info: Found excitations for momentum = 3.141592653589793
-minimum @k = 3.141592653589793:	 ΔE = 0.41047924851920886
+[ Info: Found excitations for momentum = 0.8377580409572781
+minimum @k = 3.141592653589793:	 ΔE = 0.410479248594856
 
 ````