Quantum computation of thermal averages in the presence of a sign problem

• URL: http://arxiv.org/abs/2001.05328v1
• Date: Wed, 15 Jan 2020 14:01:11 GMT
• Title: Quantum computation of thermal averages in the presence of a sign problem
• Authors: Giuseppe Clemente, Marco Cardinali, Claudio Bonati, Enrico Calore, Leonardo Cosmai, Massimo D'Elia, Alessandro Gabbana, Davide Rossini, Fabio Sebastiano Schifano, Raffaele Tripiccione and Davide Vadacchino
• Abstract summary: We illustrate the application of Quantum Computing techniques to the investigation of the thermodynamical properties of a simple system. We show how quantum algorithms completely solve the problem, and discuss how this can apply to more complex systems of physical interest.
• Score: 45.82374977939355
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We illustrate the application of Quantum Computing techniques to the investigation of the thermodynamical properties of a simple system, made up of three quantum spins with frustrated pair interactions and affected by a hard sign problem when treated within classical computational schemes. We show how quantum algorithms completely solve the problem, and discuss how this can apply to more complex systems of physical interest, with emphasis on the possible systematics and on their control.

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