Gravity as a mesoscopic system

Abstract We employ a probabilistic mesoscopic description to draw conceptual and quantitative analogies between Brownian motion and late-time fluctuations of thermal correlation functions in generic chaotic systems respecting ETH. In this framework, thermal correlation functions of ‘simple’ operator...

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Main Authors: Pietro Pelliconi, Julian Sonner, Herman Verlinde
Format: Article
Language:English
Published: SpringerOpen 2025-04-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP04(2025)097
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author Pietro Pelliconi
Julian Sonner
Herman Verlinde
author_facet Pietro Pelliconi
Julian Sonner
Herman Verlinde
author_sort Pietro Pelliconi
collection DOAJ
description Abstract We employ a probabilistic mesoscopic description to draw conceptual and quantitative analogies between Brownian motion and late-time fluctuations of thermal correlation functions in generic chaotic systems respecting ETH. In this framework, thermal correlation functions of ‘simple’ operators are described by stochastic processes, which are able to probe features of the microscopic theory only in a probabilistic sense. We apply this formalism to the case of semiclassical gravity in AdS3, showing that wormhole contributions can be naturally identified as moments of stochastic processes. We also point out a ‘Matryoshka doll’ recursive structure in which information is hidden in higher and higher moments, and which can be naturally justified within the stochastic framework. We then re-interpret the gravitational results from the boundary perspective, promoting the OPE data of the CFT to probability distributions. The outcome of this study shows that semiclassical gravity in AdS can be naturally interpreted as a mesoscopic description of quantum gravity, and a mesoscopic holographic duality can be framed as a moment-vs.-probability-distribution duality.
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spelling doaj-art-01b8b857b86b4be4bd75233fe05f9c8b2025-08-20T02:15:25ZengSpringerOpenJournal of High Energy Physics1029-84792025-04-012025412610.1007/JHEP04(2025)097Gravity as a mesoscopic systemPietro Pelliconi0Julian Sonner1Herman Verlinde2Department of Theoretical Physics, University of GenevaDepartment of Theoretical Physics, University of GenevaDepartment of Physics, Princeton UniversityAbstract We employ a probabilistic mesoscopic description to draw conceptual and quantitative analogies between Brownian motion and late-time fluctuations of thermal correlation functions in generic chaotic systems respecting ETH. In this framework, thermal correlation functions of ‘simple’ operators are described by stochastic processes, which are able to probe features of the microscopic theory only in a probabilistic sense. We apply this formalism to the case of semiclassical gravity in AdS3, showing that wormhole contributions can be naturally identified as moments of stochastic processes. We also point out a ‘Matryoshka doll’ recursive structure in which information is hidden in higher and higher moments, and which can be naturally justified within the stochastic framework. We then re-interpret the gravitational results from the boundary perspective, promoting the OPE data of the CFT to probability distributions. The outcome of this study shows that semiclassical gravity in AdS can be naturally interpreted as a mesoscopic description of quantum gravity, and a mesoscopic holographic duality can be framed as a moment-vs.-probability-distribution duality.https://doi.org/10.1007/JHEP04(2025)097AdS-CFT CorrespondenceBlack HolesField Theories in Lower DimensionsBlack Holes in String Theory
spellingShingle Pietro Pelliconi
Julian Sonner
Herman Verlinde
Gravity as a mesoscopic system
Journal of High Energy Physics
AdS-CFT Correspondence
Black Holes
Field Theories in Lower Dimensions
Black Holes in String Theory
title Gravity as a mesoscopic system
title_full Gravity as a mesoscopic system
title_fullStr Gravity as a mesoscopic system
title_full_unstemmed Gravity as a mesoscopic system
title_short Gravity as a mesoscopic system
title_sort gravity as a mesoscopic system
topic AdS-CFT Correspondence
Black Holes
Field Theories in Lower Dimensions
Black Holes in String Theory
url https://doi.org/10.1007/JHEP04(2025)097
work_keys_str_mv AT pietropelliconi gravityasamesoscopicsystem
AT juliansonner gravityasamesoscopicsystem
AT hermanverlinde gravityasamesoscopicsystem