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Quantum corrections to the AdS bulk from a semiclassical description of D-branes.

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Title: Quantum corrections to the AdS bulk from a semiclassical description of D-branes.
Authors: Patrascu, Andrei T.1 (AUTHOR) andrei.patrascu.11@ucl.ac.uk
Source: European Physical Journal C -- Particles & Fields. May2026, Vol. 86 Issue 5, p1-10. 10p.
Subjects: Quantum coherence, D-branes, Quantum perturbations, Quantum gravity, Geometric quantization
Abstract: We investigate the emergence of spacetime geometry within the AdS/CFT correspondence by explicitly incorporating quantum coherence effects arising from finite coherent superpositions of closed-string modes forming mesoscopic quantum D-branes. We show that the stage at which quantum coherence is suppressed relative to the construction of the emergent geometry significantly influences the resulting spacetime structure. Suppressing coherence prior to constructing the effective geometric description yields a purely classical Anti-de Sitter (AdS) geometry, whereas constructing the geometry from a coherent state and only subsequently suppressing interference leads to controlled quantum corrections of order O (M - 2) to the AdS background. We further demonstrate that both microscopic coherence between string modes and mesoscopic coherence among D-branes distinctly shape the resulting spacetime structure, introducing measurable quantum deviations from classical geometry. Our results provide critical insights into how quantum coherence may underpin the emergence of classical gravity and offer new directions for studying quantum-gravitational phenomena within holographic frameworks. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Quantum corrections to the AdS bulk from a semiclassical description of D-branes.
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. May2026, Vol. 86 Issue 5, p1-10. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Quantum+coherence%22">Quantum coherence</searchLink><br /><searchLink fieldCode="DE" term="%22D-branes%22">D-branes</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+perturbations%22">Quantum perturbations</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+gravity%22">Quantum gravity</searchLink><br /><searchLink fieldCode="DE" term="%22Geometric+quantization%22">Geometric quantization</searchLink>
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  Data: We investigate the emergence of spacetime geometry within the AdS/CFT correspondence by explicitly incorporating quantum coherence effects arising from finite coherent superpositions of closed-string modes forming mesoscopic quantum D-branes. We show that the stage at which quantum coherence is suppressed relative to the construction of the emergent geometry significantly influences the resulting spacetime structure. Suppressing coherence prior to constructing the effective geometric description yields a purely classical Anti-de Sitter (AdS) geometry, whereas constructing the geometry from a coherent state and only subsequently suppressing interference leads to controlled quantum corrections of order O (M - 2) to the AdS background. We further demonstrate that both microscopic coherence between string modes and mesoscopic coherence among D-branes distinctly shape the resulting spacetime structure, introducing measurable quantum deviations from classical geometry. Our results provide critical insights into how quantum coherence may underpin the emergence of classical gravity and offer new directions for studying quantum-gravitational phenomena within holographic frameworks. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1140/epjc/s10052-026-15724-x
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