A Quantum Annealing Protocol to Solve the Nuclear Shell Model

• URL: http://arxiv.org/abs/2411.06954v1
• Date: Mon, 11 Nov 2024 13:00:37 GMT
• Title: A Quantum Annealing Protocol to Solve the Nuclear Shell Model
• Authors: Emanuele Costa, Axel Perez-Obiol, Javier Menendez, Arnau Rios, Artur Garcia-Saez, Bruno Julia-Diaz,
• Abstract summary: We investigate the implementation of a quantum annealing protocol for nuclear ground states. We propose a driver Hamiltonian with sufficiently large gaps, and validate our approach in setups with up to 28 nucleons.
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• Abstract: The nuclear shell model describes very accurately the structure and dynamics of atomic nuclei. However, the exponential scaling of the basis size with respect to the number of degrees of freedom hampers a direct numerical solution for heavy nuclei. In this work, we investigate the implementation of a quantum annealing protocol for nuclear ground states. We propose a driver Hamiltonian with sufficiently large gaps, and validate our approach in nuclei with up to 28 nucleons employing classical simulations of the annealing evolution using a digitalized Trotter decomposition. While the nuclear Hamiltonian is non-local and thus challenging to implement in current annealing setups, the estimated computational cost of our annealing protocol on quantum circuits is polynomial in the number of elements of the many-body basis.

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