v0.2.10

ITensors v0.2.10

Diff since v0.2.9

Merged pull requests:

• Add ChainRules rules for basic reverse mode AD rules for ITensors (#761) (@mtfishman)

v0.2.9

ITensors v0.2.9

Diff since v0.2.8

Closed issues:

• Ground state energy sign is non-deterministically flipping (#739)
• Allow multi-site operators in OpSum (#741)
• correlation_matrix using a large amount of memory (#753)

Merged pull requests:

• Fix contraction ordering in correlation matrix (#754) (@emstoudenmire)
• Fix test truncation test for Julia 1.7 (#755) (@mtfishman)

v0.2.8

ITensors v0.2.8

Diff since v0.2.7

Closed issues:

• Add unicode aliases for fermionic operators (#747)

Merged pull requests:

• Fix subtraction of term from OpSum. Add more unicode operator name aliases (#748) (@mtfishman)
• Add support for multisite operators in OpSum (#749) (@mtfishman)
• Fix bug in permute (#750) (@mtfishman)

v0.2.7

ITensors v0.2.7

Diff since v0.2.6

Closed issues:

• Set a good default truncation in contract(::MPO, ::MPS) (#422)
• Threaded blocksparse tensor contraction not working (#745)

Merged pull requests:

• Generalize ITensor constructors to allow mixtures of collections of indices (#728) (@mtfishman)
• Use Compat to make blas_get_num_threads simpler (#731) (@mtfishman)
• Pass kwargs in MPO contract (#733) (@emstoudenmire)
• Allow AbstractArray inputs when constructing ITensor (#737) (@mtfishman)
• Add syntax highlighting to bibtex entry (#738) (@paniash)
• Limit maxdim in default contract (#744) (@emstoudenmire)
• Fix threaded contraction, add CI tests for threading (#746) (@mtfishman)

v0.2.6

ITensors v0.2.6

Diff since v0.2.5

Closed issues:

• DMRG Not Converging to Exact Result (#725)

Merged pull requests:

• Add support for complex data written by C++ ITensor for block sparse tensors (#724) (@emstoudenmire)
• Tighten accuracy cutoff for OpSum / AutoMPO (#726) (@emstoudenmire)
• Add QNs to Qudit definition as well as Boson alias (#727) (@mtfishman)

v0.2.5

ITensors v0.2.5

Diff since v0.2.4

Closed issues:

• upgrading v0.1 to v0.2, reading "old" MPS/ITensor format (#714)
• state function overloads sometimes failing (#718)

Merged pull requests:

• WIP: Get some precompilation working (#655) (@mtfishman)
• FAQ Edits (#712) (@emstoudenmire)
• Hdf5 read compat (#715) (@jtschneider)
• Add descriptions of HDF5 file formats (#716) (@emstoudenmire)
• Add file formats for MPS, MPO (#717) (@emstoudenmire)
• Fixed bug involving missing default case for state function (#719) (@emstoudenmire)
• Add support for reading complex ITensors written from C++ (#720) (@emstoudenmire)

v0.2.4

ITensors v0.2.4

Diff since v0.2.3

Closed issues:

• Improvements to SiteType system (#428)
• Bug in AutoMPO with fermionic operators on same site (?) (#514)
• Version 0.2 Roadmap (#639)
• Op system op! function not getting called (#697)
• Bug in correlation_matrix with QNs (#700)
• Put ITensors. in front of site_type codes? (#703)

Merged pull requests:

• Automatic fermion system (#667) (@emstoudenmire)
• Add norm(::EmptyStorage) (#699) (@mtfishman)
• Add sim(::Pair{<:Index}) (#701) (@mtfishman)
• Fix issue with Index arrow for QN case of correlation_matrix (#702) (@emstoudenmire)
• Prepend site type functions with ITensors. (#704) (@emstoudenmire)
• Code examples about making an array from an ITensor, QR with postive R, and sampling an MPS (#705) (@emstoudenmire)
• Docs improvements (#708) (@emstoudenmire)
• Started work on FAQs (#709) (@emstoudenmire)
• Add denseblocks definition for Diag storage (#710) (@mtfishman)
• Fix state function when overloading version that accepts an Index (#711) (@mtfishman)

v0.2.3

ITensors v0.2.3

Diff since v0.2.2

Merged pull requests:

• Make ITensors evaluate as unequal if they have different indices (#690) (@mtfishman)
• Update Documenter version to 0.27 (#691) (@emstoudenmire)
• Update Tutorials.md, correcting typo "Boson SiteType" (#692) (@jtschneider)
• Add denseblocks to convert from DiagBlockSparse to BlockSparse tensor (#693) (@mtfishman)

v0.2.2

ITensors v0.2.2

Diff since v0.2.1

Merged pull requests:

• New interface contract([A, [B, C]]) for contracting a sequence of tensors (#686) (@mtfishman)
• Make Index non-broadcastable (#689) (@mtfishman)

v0.2.1

ITensors v0.2.1

Diff since v0.2.0

Closed issues:

• Use state instead of val in MPS product state constructor (#678)
• lastindex not working for single-index ITensor (#680)
• An error in doc (#683)

Merged pull requests:

• Fix incorrect doc string (#684) (@emstoudenmire)
• MPS product state constructor (#685) (@emstoudenmire)