Gaussian-augmented bosonic matrix-product states: theory and applications

Erickson Tjoa; J. Ignacio Cirac

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arXiv · 2607.28753

Gaussian-augmented bosonic matrix-product states: theory and applications

Erickson Tjoa·J. Ignacio Cirac

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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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Erickson Tjoa, J. Ignacio Cirac. 2026-07-30. Gaussian-augmented bosonic matrix-product states: theory and applications. https://arxiv.org/abs/2607.28753

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