v0.11.6

MPSKit v0.11.6

Diff since v0.11.5

Merged pull requests:

• [Bugfix] Ensure that projection environments have correct above (#204) (@lkdvos)

Closed issues:

• FiniteExcited() throws SpaceMismatch() error (#203)

v0.11.5

MPSKit v0.11.5

Diff since v0.11.4

Small fixes and improvements

Merged pull requests:

• CompatHelper: bump compat for VectorInterface to 0.5, (keep existing compat) (#190) (@github-actions[bot])
• Bump codecov/codecov-action from 4 to 5 (#191) (@dependabot[bot])
• Actions update (#192) (@lkdvos)
• Add Hubbard excitations example (#193) (@lkdvos)
• Macroexpand generated expressions (#197) (@lkdvos)
• Ensure expval returns normalized values (#200) (@lkdvos)
• update normalization convention environments (#201) (@lkdvos)

Closed issues:

• Inconsistent normalization when computing expectation value (#194)
• VUMPS for real-valued iMPS (#198)

v0.11.4

MPSKit v0.11.4

Diff since v0.11.3

Merged pull requests:

• excise RecursiveVec (#189) (@lkdvos)

v0.11.3

MPSKit v0.11.3

Diff since v0.11.2

Merged pull requests:

• 3 site tests (#180) (@Gertian)
• Fixes an issue with missing duals for spaces in fusers. (#184) (@lkdvos)
• Temporary fix for RecursiveVec change (#187) (@lkdvos)

Closed issues:

• How to apply a single creation/annihilation operator to a finite MPS ? (#160)
• Possible bug for the multiplication between a FiniteMPO and FiniteMPS (#183)

v0.11.2

MPSKit v0.11.2

Diff since v0.11.1

Merged pull requests:

• Documentation update: changebonds improvements (#168) (@Gertian)
• Add documentation for some exported methods (#171) (@leburgel)
• Some MPOHamiltonian fixes (#172) (@leburgel)
• Fix issue where SVDCut produces InfiniteMPS that is not full rank (#174) (@lkdvos)
• CompatHelper: bump compat for TensorKitManifolds to 0.7, (keep existing compat) (#177) (@github-actions[bot])

Closed issues:

• SVD using the divide and conquer algorithm might fail for certain tensors. (#109)
• Exact diagonalization implementation (#170)

v0.11.1

MPSKit v0.11.1

Diff since v0.11.0

Various small improvements and fixes

Merged pull requests:

• Fix hard hexagon example (#158) (@leburgel)
• Support logging complex objective functions (#161) (@lkdvos)
• Remove logging expval from IDMRG2 to avoid SpaceMismatch (#163) (@lkdvos)
• Add verbosity kwarg to default algorithm selectors (#164) (@lkdvos)
• Bump version 0.11.1 (#165) (@lkdvos)

Closed issues:

• Unexpected behaviour with virtual spaces in InfiniteMPS constructor (#162)

v0.11.0 doc fix

v0.11.0+doc1

Fix hard hexagon example (#158)

v0.11.0

MPSKit v0.11.0

Diff since v0.10.2

Merged pull requests:

• MultipliedOperator: Functionality for time-evolution of time-dependent Hamiltonians (#104) (@DaanMaertens)
• merge master into windows branch (#108) (@DaanMaertens)
• Bump codecov/codecov-action from 3 to 4 (#110) (@dependabot[bot])
• Add spacechecks and warnings to InfiniteMPS constructor (#112) (@lkdvos)
• Quasiparticle optimizations (#113) (@lkdvos)
• refactor dynamic tolerances using ThrottledTol (#118) (@lkdvos)
• Refactor tests into modules (#119) (@lkdvos)
• Fix correlator for fermionic systems (#124) (@lkdvos)
• Refactor algorithm logging (#125) (@lkdvos)
• Fix url for dev docs (#126) (@leburgel)
• Change tol_galerkin to tol (#127) (@lkdvos)
• VOMPS (#128) (@lkdvos)
• KrylovKit v0.7 (#130) (@lkdvos)
• Refactor infinite gaugefixing (#132) (@lkdvos)
• Refactor eigsolve to fixedpoint (#134) (@lkdvos)
• Bump julia-actions/setup-julia from 1 to 2 (#136) (@dependabot[bot])
• Optimize part of the quasiparticle environment calculation (#138) (@lkdvos)
• Add FiniteMPO (#139) (@lkdvos)
• Bump minimal julia version to v1.8 (#140) (@lkdvos)
• Refactor MPOHamiltonian (#141) (@lkdvos)
• Bump julia-actions/cache from 1 to 2 (#142) (@dependabot[bot])
• Bump julia-actions/julia-format from 2 to 3 (#143) (@dependabot[bot])
• Some more doc updates for MPOHamiltonian (#145) (@lkdvos)
• Add tests for logging features of find_groundstate (#146) (@lkdvos)
• Add Chepiga ansatz (#147) (@lkdvos)
• Update algorithms.md (#148) (@lkdvos)
• Add chepiga comment (#149) (@dartsushi)
• Update links and badges (#150) (@leburgel)
• Fix docs build (#151) (@leburgel)
• Improve test stability (#152) (@lkdvos)
• Reinstate Lanczos as the default solver for hermitian systems (#154) (@lkdvos)
• Bump julia-actions/setup-julia from 1 to 2 (#155) (@dependabot[bot])
• expectation_value is a number (#156) (@lkdvos)
• Update examples (#157) (@lkdvos)

Closed issues:

• Plotting error measures during groundstate searches (#105)
• Tests complain about duplicate includes of setup.jl (#115)
• IDMRG2 can error when the input state is not full rank (#117)
• Define MPOHamiltonian with open boundary condition (#120)
• correlator silently produces wrong results for fermionic systems (#123)
• Reproducibility issue: identify source of randomness (#135)
• Error while logging expectation values for iDMRG. (#137)

v0.10.2

MPSKit v0.10.2

Diff since v0.10.1

Merged pull requests:

• LazySum: Functionality to perform TDVP and find_groundstate with a lazy sum (#91) (@DaanMaertens)
• Fix FiniteMPS addition not full-rank (#96) (@lkdvos)
• Fix approximate(ψ::FiniteMPS, (H::DenseMPO, ψ₀::FiniteMPS), ...) (#99) (@leburgel)
• Format yas style (#100) (@lkdvos)
• Variable name changes (#101) (@lkdvos)
• Fix #93 Rewrite FiniteMPS constructors (#102) (@lkdvos)

Closed issues:

• Possible MethodError when running excitations(H,alg::FiniteExcited, states) (#89)
• Unable to construct a FiniteMPS that has alternating virtual spaces without specifying all virtual spaces. (#93)
• Adding FiniteMPS results in state that is not full-rank (#95)
• approximate(ψ::FiniteMPS, (H::DenseMPO, ψ₀::FiniteMPS), ...) is broken (#97)

v0.10.1

MPSKit v0.10.1

Diff since v0.10.0