Sign Problem in Tensor-Network Contraction
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 observe that the approximate contraction of tensor networks with only positive entries has lower computational complexit...
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Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
American Physical Society
2025-01-01
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Series: | PRX Quantum |
Online Access: | http://doi.org/10.1103/PRXQuantum.6.010312 |
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