A Simple Proof of PreciseQMA = PSPACE

06/18/2022

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by   Yulong Li, et al.

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We give an alternative proof of PreciseQMA = PSPACE, first proved by Fefferman and Lin (Innov. Theor. Comp. Sci. 2018), where PreciseQMA is the class Quantum Merlin-Arthur with inverse exponential completeness-soundness gap. We adapt the proof of Quantum Cook-Levin Theorem to prove the inclusion PSPACE in PreciseQMA.