Author

Maximilian Fröhlich

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Preprint Aug 2026

Basis-update and Galerkin time integration in canonical matrix-product-state form

Matrix product state algorithms must enlarge their bond spaces as entanglement grows and compress them to control cost. We formulate basis-update and Galerkin (BUG) time integration as a sequence of canonical MPS sweeps for Hamiltonians represented as matrix product operators. We show when two natural basis updates pro...

Maximilian Fröhlich, Richard M. Milbradt, Martin Eigel et al. · 0 citations

Preprint Aug 2026

Scalable Lindblad Noise Learning via Stochastic Tensor-Network Simulation

A scalable noise-learning framework for Lindblad dissipation rates that combines a stochastic simulation method, the Tensor Jump Method (TJM), with gradient-free optimization of a least-squares cost-function defined on time series of local-observable expectation values is proposed.

A. R. Ramos Ramos, Maximilian Fröhlich, Aaron Sander et al. · 0 citations