Release v0.14.1 - #552

MPSKit.jl v0.14.1

Infinite MPO Hamiltonians can now be compressed with SvdCut, finite MPS gain standalone linear solvers, and make_time_mpo gains a cluster-expansion algorithm.

Highlights

• ClusterExpansion for make_time_mpo: evolution MPOs for finite and infinite nearest-neighbour Hamiltonians that match the exact exponentials on clusters of up to N sites (Implement cluster expansion MPOs #252).
• changebonds(::InfiniteMPOHamiltonian, ::SvdCut) compresses infinite Hamiltonians. The canonical forms of finite and infinite MPO Hamiltonians, and therefore SvdCut, are now correct when interactions contain identity components (Infinite MPOHamiltonian compression via SvdCut #539, Add regression test for long-range SvdCut with identity components #551).
• linear_solve/linear_solve! solve (a₀ + a₁·A)·x = b for finite MPS with the DMRG-style sweeps DMRGSolve/DMRGSolve2. propagator/DynamicalDMRG now build on them and gain a bond-adaptive trunc option (feat: standalone linear_solve primitives #479).
• Finite DMRG and DMRG2 cache the prepared halves of the effective Hamiltonians, which roughly halves the memory allocated per sweep for MPOs with many terms (Prepare effective Hamiltonian halves in FiniteEnvironments #546). In-place timestep!/time_evolve! are now available for infinite TDVP (Iterator-based sweep solvers #537).

Full Changelog

See CHANGELOG for the complete list of changes.

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