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Unitary Matrix Models and 2D Quantum Gravity (Virasoro constraints modified)

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arxiv hep-th/9206060 v2 pith:RSL7JJIJ submitted 1992-06-15 hep-th

classification hep-th
keywords solutionsmatrixunitarymodelsmodifiednon-singularstringtilde
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

The KdV and modified KdV integrable hierarchies are shown to be different descriptions of the same 2D gravitational system -- open-closed string theory. Non-perturbative solutions of the multi-critical unitary matrix models map to non-singular solutions of the `renormalisation group' equation for the string susceptibility, $[\tilde{P},Q]=Q$. We also demonstrate that the large N solutions of unitary matrix integrals in external fields, studied by Gross and Newman, equal the non-singular pure closed-string solutions of $[\tilde{P},Q]=Q$.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Extended JT supergravity and random matrix models: The power of the string equation

    hep-th 2025-07 conditional novelty 7.0 of 10

    The string equation, with simple analyticity requirements, determines BPS sectors from non-BPS sectors and yields matrix model descriptions for N=3 and large N=4 JT supergravity.

  2. Instanton-Induced Closed-String Amplitudes in Minimal Superstring Theory at Subleading Order

    hep-th 2026-06 unverdicted novelty 6.0 of 10

    Explicit computation of instanton-induced amplitudes in minimal superstring theories at subleading order, after regulating open-string degenerations with string field theory, yields exact agreement with DDK-KPZ scaling.

  3. Spectral Form Factor of Gapped Random Matrix Systems

    hep-th 2026-01 unverdicted novelty 6.0 of 10

    In gapped random matrix systems with parametrically many degenerate ground states, the spectral form factor at low temperatures is dominated by the disconnected contribution at all times, while the connected form fact...

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