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Efficient Tensor Network <i>Ansatz</i> for High-Dimensional Quantum Many-Body Problems

Efficient Tensor Network <i>Ansatz</i> for High-Dimensional Quantum Many-Body Problems

We introduce a novel tensor network structure augmenting the well-established Tree Tensor Network representation of a quantum many-body wave function. The new structure satisfies the area law in high dimensions remaining efficiently manipulatable and scalable. We benchmark this novel approach against paradigmatic two-dimensional spin models demonstrating unprecedented precision and system …