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Bootstrapping time-evolution in quantum mechanics

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arxiv 2412.08721 v1 pith:IPXPOOOP submitted 2024-12-11 hep-th hep-latquant-ph

classification hep-thhep-latquant-ph
keywords boundstime-evolutionhierarchysystemanharmonicfixedmethodquantum
verification ladder T0 review T1 audit T2 compute T3 formal
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We present a method for obtaining a hierarchy of rigorous bounds on the time-evolution of a quantum mechanical system from an arbitrary initial state, systematically generalizing Mandelstam-Tamm-like relations. For any fixed level in the hierarchy, the bounds are tightest after short time-evolution and gradually loosen over time; we present evidence that for any fixed amount of time-evolution, the bounds can be made arbitrarily tight by moving up in the hierarchy. The computational effort to obtain the bounds scales polynomially with the number of degrees of freedom in the system being simulated. We demonstrate the method on both a single anharmonic oscillator and a system of two coupled anharmonic oscillators.

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Cited by 2 Pith papers

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

  1. Bootstrapping Euclidean Two-point Correlators

    hep-th 2025-11 unverdicted novelty 7.0 of 10

    A semidefinite programming bootstrap is formulated for Euclidean two-point correlators in quantum mechanics, yielding rigorous bounds and low-lying spectrum extraction in the ungauged one-matrix model.

  2. Real-time dynamics from convex geometry

    hep-lat 2025-02 conditional novelty 3.0 of 10

    The paper derives model-independent, tight bounds on smeared real-time correlators from Euclidean lattice data by solving a finite-dimensional convex program.

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