Gaussian-augmented bosonic matrix-product states: theory and applications
Source: Originally published on arXiv quant-ph on August 3, 2026.
arXiv:2607.28753v1 Announce Type: new Abstract: We propose and analyze the structure of a family of bosonic quantum many-body states that have the following features: (i) they include all pure Gaussian states and finite-dimensional matrix-product states as subclasses; (ii) their expectation values can be efficiently computed, allowing them to be used, among other things, for variational calculations; (iii) they admit exact parent Hamiltonians expressed as simple functions of the bosonic creation and annihilation operators....
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