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A Collapsible Polynomial Hierarchy for Promise Problems

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arxiv 2311.12228 v1 pith:4R7JZLIP submitted 2023-11-20 cs.CC quant-ph

classification cs.CCquant-ph
keywords hierarchypolynomialproblemspromisedefinitiongharibianapplyingbeen
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The polynomial hierarchy has been widely studied in classical complexity theory. In this paper, we will generalize some commonly known results about the polynomial hierarchy to a version of the hierarchy extended to promise problems. This paper proposes new definitions of existential and universal operators for classes of promise problems. Applying these to BQP, we recover the hierarchy proposed by Gharibian et al. (MFCS 2018). Moreover, using our definition, we give an easy proof of the collapse of this hierarchy under a Karp-Lipton-like scenario, which was an open question for the original definition of Gharibian et al.

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

  1. Collapses in quantum-classical probabilistically checkable proofs and the quantum polynomial hierarchy

    quant-ph 2025-06 reject novelty 6.0 of 10

    The paper's claimed collapses of quantum-classical PCPs and the quantum polynomial hierarchy rest on invalid reductions, so the main theorems are unsupported.

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