# Measuring complex-partition-function zeros of Ising models in quantum simulators

@article{Krishnan2019MeasuringCZ, title={Measuring complex-partition-function zeros of Ising models in quantum simulators}, author={Abijith Krishnan and Markus Schmitt and Roderich Moessner and Markus Heyl}, journal={Physical Review A}, year={2019} }

Studying the zeros of partition functions in the space of complex control parameters allows one to understand formally how critical behavior of a many-body system can arise in the thermodynamic limit despite various no-go theorems for finite systems. In this work we propose protocols that can be realized in quantum simulators to measure the location of complex-partition-function zeros of classical Ising models. The protocols are solely based on the implementation of simple two-qubit gates…

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