2 papers
quant-ph2025
Sign problem in tensor network contraction
Jielun Chen, Jiaqing Jiang, Dominik Hangleiter +1
We investigate how the computational difficulty of contracting tensor networks depends on the sign structure of the tensor entries. Using results from computational complexity, we…
quant-ph2024
Positive bias makes tensor-network contraction tractable
Jiaqing Jiang, Jielun Chen, Norbert Schuch +1
Tensor network contraction is a powerful computational tool in quantum many-body physics, quantum information and quantum chemistry. The complexity of contracting a tensor network…