Abstracts
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From non-stoquastic to stoquastic Hamiltonians
Presenting Author: Milad Marvian, University of Southern California
Contributing Author(s): Itay Hen, Daniel Lidar
Non-stoquastic Hamiltonians cannot be efficiently simulated with quantum Monte Carlo techniques due to the infamous sign problem. We study the conditions under which seemingly non-stoquastic Hamiltonians are still simulable by QMC. We argue that this drives a novel definition of stoquasticity that is based on the computational complexity required to transform non-stoquastic Hamiltonians into simulable stoquastic ones. We provide several examples and results motivating this definition.
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