Reflected entropy in random tensor networks III: triway cuts
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866929588525858816 |
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| author | Akers, Chris Faulkner, Thomas Lin, Simon Rath, Pratik |
| author_facet | Akers, Chris Faulkner, Thomas Lin, Simon Rath, Pratik |
| contents | For general random tensor network states at large bond dimension, we prove that the integer Rényi reflected entropies (away from phase transitions) are determined by minimal triway cuts through the network. This generalizes the minimal cut description of bipartite entanglement for these states. A natural extrapolation away from integer Rényi parameters, suggested by the triway cut problem, implies the holographic conjecture $S_R=2EW$, where $S_R$ is the reflected entropy and $EW$ is the entanglement wedge cross-section. Minimal triway cuts can be formulated as integer programs which cannot be relaxed to find a dual maximal flow/bit-thread description. This sheds light on the gap between the existence of tripartite entanglement in holographic states and the bipartite entanglement structure motivated by bit-threads. In particular, we prove that the Markov gap that measures tripartite entanglement is lower bounded by the integrality gap of the integer program that computes the triway cut. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17218 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Reflected entropy in random tensor networks III: triway cuts Akers, Chris Faulkner, Thomas Lin, Simon Rath, Pratik High Energy Physics - Theory General Relativity and Quantum Cosmology Mathematical Physics Probability Quantum Physics For general random tensor network states at large bond dimension, we prove that the integer Rényi reflected entropies (away from phase transitions) are determined by minimal triway cuts through the network. This generalizes the minimal cut description of bipartite entanglement for these states. A natural extrapolation away from integer Rényi parameters, suggested by the triway cut problem, implies the holographic conjecture $S_R=2EW$, where $S_R$ is the reflected entropy and $EW$ is the entanglement wedge cross-section. Minimal triway cuts can be formulated as integer programs which cannot be relaxed to find a dual maximal flow/bit-thread description. This sheds light on the gap between the existence of tripartite entanglement in holographic states and the bipartite entanglement structure motivated by bit-threads. In particular, we prove that the Markov gap that measures tripartite entanglement is lower bounded by the integrality gap of the integer program that computes the triway cut. |
| title | Reflected entropy in random tensor networks III: triway cuts |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology Mathematical Physics Probability Quantum Physics |
| url | https://arxiv.org/abs/2409.17218 |