Work

Detecting the purely imaginary Fisher zeros of an Ising spin system on a quantum computer

Year: 2025
Type: article
Abstract: We propose a protocol for studying the purely imaginary Fisher zeros of the Ising model on a quantum computer. Our protocol is based on the direct relation between the partition function for purely imaginary temperature and the evolution operator of the Ising model. In this case, the inverse temperature is equal to the time of evolution. This protocol allows one to measure the zeros only those localized on the imaginary axes. We test this protocol on the ibm-lagos quantum computer in the cases of a 3-spin chain and a triangle cluster in a purely imaginary magnetic field, as well as a 7-spin cluster in which the interaction between spins reproduces the architecture of the quantum computer.
Institution: Lviv University
Language: English
Open Access status: gold
Estimated APC paid: $2,690
OpenAlex ID: W4414510600
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Cites: 35
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