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Gauging the Spacetime Code

arXiv Quantum Physics
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⚡ Quantum Brief
Gideon Lee’s June 2026 preprint bridges spacetime codes and dynamical phases by "gauging" the former, creating a lattice gauge theory that unifies fault tolerance in quantum circuits with dynamical stability principles. The theory’s Gauss laws map to equivalence relations between spacetime errors, while Wilson loops act as error detectors, offering a new framework for robust quantum computation across time and space. Applications span quantum error correction, where the model describes foliated computation—a gauge theory for measurement-based quantum computing—enhancing fault-tolerant architectures. For topologically ordered mixed states, the work introduces a gauge-theoretic language to characterize classical memory, linking quantum phases to information storage in noisy systems. Gauge-invariant observables in the theory align with learnable features of Pauli noise in circuits, suggesting novel connections between quantum machine learning and error mitigation strategies.
Gauging the Spacetime Code

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Quantum Physics arXiv:2606.05664 (quant-ph) [Submitted on 4 Jun 2026] Title:Gauging the Spacetime Code Authors:Gideon Lee View a PDF of the paper titled Gauging the Spacetime Code, by Gideon Lee View PDF HTML (experimental) Abstract:In recent years, the spacetime code has arisen as a candidate for a unifying view of fault tolerance in space and time. On the other hand, the recent study of dynamical phases has increasingly turned its attention to fault tolerance as a notion of a dynamically stable process. In this work, I explore one pathway between the two, achieved by gauging the spacetime code. This gives rise to a lattice gauge theory that inherits the elements of fault tolerance associated with a circuit, with Gauss laws corresponding to equivalence relations between configurations of spacetime errors and Wilson loops corresponding to detectors. The obtained gauge theory finds a surprisingly wide array of applications, from quantum error correction to condensed matter physics, and even learning theory: (1) It contains in its description foliated computation, and hence gives rise to one version of a gauge theory for measurement-based quantum computation. (2) For a class of topologically ordered mixed states, it gives us a gauge-theoretic language to describe the classical memory associated with the state. (3) The gauge-invariant observables of the theory which describe detectors also coincide with the learnable degrees of freedom of circuit Pauli noise. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2606.05664 [quant-ph] (or arXiv:2606.05664v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2606.05664 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Gideon Lee [view email] [v1] Thu, 4 Jun 2026 03:47:21 UTC (987 KB) Full-text links: Access Paper: View a PDF of the paper titled Gauging the Spacetime Code, by Gideon LeeView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-06 References & Citations INSPIRE HEP NASA ADSGoogle Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv (What is alphaXiv?) Links to Code Toggle CatalyzeX Code Finder for Papers (What is CatalyzeX?) DagsHub Toggle DagsHub (What is DagsHub?) GotitPub Toggle Gotit.pub (What is GotitPub?) Huggingface Toggle Hugging Face (What is Huggingface?) ScienceCast Toggle ScienceCast (What is ScienceCast?) Demos Demos Replicate Toggle Replicate (What is Replicate?) Spaces Toggle Hugging Face Spaces (What is Spaces?) Spaces Toggle TXYZ.AI (What is TXYZ.AI?) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower (What are Influence Flowers?) Core recommender toggle CORE Recommender (What is CORE?) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs. Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)

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quantum-investment
quantum-error-correction

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Source: arXiv Quantum Physics