The holographic map as a conditional expectation Article Swipe
We study the holographic map in AdS/CFT, as modeled by a quantum error correcting code with exact complementary recovery. We show that the map is determined by local conditional expectations acting on the operator algebras of the boundary/physical Hilbert space. Several existing results in the literature follow easily from this perspective. The Black Hole area law, and more generally the Ryu-Takayanagi area operator, arises from a central sum of entropies on the relative commutant. These entropies are determined in a state independent way by the conditional expectation. The conditional expectation can also be found via a minimization procedure, similar to the minimization involved in the RT formula. For a local net of algebras associated to connected boundary regions, we show the complementary recovery condition is equivalent to the existence of a standard net of inclusions -- an abstraction of the mathematical structure governing QFT superselection sectors given by Longo and Rehren. For a code consisting of algebras associated to two disjoint regions of the boundary theory we impose an extra condition, dubbed dual-additivity, that gives rise to phase transitions between different entanglement wedges. Dual-additive codes naturally give rise to a new split code subspace, and an entropy bound controls which subspace and associated algebra is reconstructable. We also discuss known shortcomings of exact complementary recovery as a model of holography. For example, these codes are not able to accommodate holographic violations of additive for overlapping regions. We comment on how approximate codes can fix these issues.
Related Topics
- Type
- preprint
- Language
- en
- Landing Page
- http://arxiv.org/abs/2008.04810
- https://arxiv.org/pdf/2008.04810
- OA Status
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- OpenAlex ID
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Raw OpenAlex JSON
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https://openalex.org/W3048584138Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.48550/arxiv.2008.04810Digital Object Identifier
- Title
-
The holographic map as a conditional expectationWork title
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preprintOpenAlex work type
- Language
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enPrimary language
- Publication year
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2020Year of publication
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2020-08-11Full publication date if available
- Authors
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Thomas FaulknerList of authors in order
- Landing page
-
https://arxiv.org/abs/2008.04810Publisher landing page
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https://arxiv.org/pdf/2008.04810Direct link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
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greenOpen access status per OpenAlex
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https://arxiv.org/pdf/2008.04810Direct OA link when available
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Holography, Computer science, Artificial intelligence, Optics, PhysicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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21Total citation count in OpenAlex
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-
2024: 7, 2023: 7, 2022: 2, 2021: 4, 2020: 1Per-year citation counts (last 5 years)
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56Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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| abstract_inverted_index.dual-additivity, | 172 |
| abstract_inverted_index.reconstructable. | 205 |
| abstract_inverted_index.boundary/physical | 37 |
| cited_by_percentile_year | |
| corresponding_author_ids | https://openalex.org/A5109902567 |
| countries_distinct_count | 1 |
| institutions_distinct_count | 1 |
| corresponding_institution_ids | https://openalex.org/I157725225 |
| sustainable_development_goals[0].id | https://metadata.un.org/sdg/16 |
| sustainable_development_goals[0].score | 0.5400000214576721 |
| sustainable_development_goals[0].display_name | Peace, Justice and strong institutions |
| citation_normalized_percentile |