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On physical problems that are slightly more difficult than QMA

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arxiv 1312.4758 v2 pith:ABCQOYDL submitted 2013-12-17 quant-ph cs.CC

classification quant-phcs.CC
keywords complexityproblemscomputationalclassesnaturalquantumslightlyappear
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We study the complexity of computational problems from quantum physics. Typically, they are studied using the complexity class QMA (quantum counterpart of NP) but some natural computational problems appear to be slightly harder than QMA. We introduce new complexity classes consisting of problems that are solvable with a small number of queries to a QMA oracle and use these complexity classes to quantify the complexity of several natural computational problems (for example, the complexity of estimating the spectral gap of a Hamiltonian).

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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. Universal Parent Hamiltonians for Adiabatic Warm Starts

    quant-ph 2026-07 conditional novelty 6.0 of 10

    A quantum algorithm framework that converts any circuit-prepared state into an initial Hamiltonian for adiabatic state preparation, with numerical evidence that same-phase MPS warm starts improve adiabatic gaps.

  2. Optimal working point in digitized quantum annealing

    cond-mat.stat-mech 2019-09 conditional novelty 6.0 of 10

    For a fixed number of Trotter steps, linear-schedule digitized quantum annealing has an optimal total time proportional to the step count; longer times produce the maximally disordered state.

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